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	<title>Observatorio San José</title>
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	<description>Astronomía en Buenos Aires - Lo formamos un grupo de ex-alumnos del Colegio San José los cuales compartimos una misma pasión que abarca, además de la astronomía, a la ciencia en general y a la historia; por esta razón verán que el sitio del OSJ tiene un estilo particular en este sentido.</description>
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		<title>Péndulo físico</title>
		<link>https://observatoriosanjose.com.ar/wp/pendulo-fisico/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Sat, 19 Feb 2022 12:24:49 +0000</pubDate>
				<category><![CDATA[Física General]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2612</guid>

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										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_0 et_section_regular" >
				
				
				
				
				
				
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				<div class="et_pb_text_inner">Péndulo físico</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Ducretet &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> fines del siglo XIX &#8211; <strong>Nro Catálogo:</strong> 1.1.2.1.H<br />
<strong>Uso:</strong> verificación de las leyes del movimiento oscilatorio armónico</h2></div>
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				<div class="et_pb_text_inner"><strong>Características</strong>: construido en latón, hierro y madera, el aparato está formado por una barra graduada sobre la que se pueden deslizar dos cilindros con masas diferentes. En la misma barra se encuentras dos fulcros de acero regulables que permiten que el sistema oscile sobre una orquilla superior de acero fundido. En su base cuenta con una tornillo móvil, con una vistosa cabeza de latón, a fin de poder equilibrar la misma.Las diferentes configuraciones que pueden obtenerse  regulando las distancias entre masas y fulcros sirven para comprobar empíricamente las leyes físicas de oscilación de los cuerpos reales, también llamados péndulos físicos en contraposición al péndulo ideal compuesto teóricamente por una masa concentrada en un punto y un hilo inextensible sin peso alguno. Conociendo las masas, posiciones y midiendo el período de oscilación es posible calcular la magnitud de la gravedad terrestre del lugar. En el centro de su base lleva poco legible sobre la madera el cuño Ducretet &#8211; París</div>
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<p>&nbsp;</p></div>
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<p>&nbsp;</p></div>
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		<item>
		<title>Aparato fotográfico del Telescopio Mailhat</title>
		<link>https://observatoriosanjose.com.ar/wp/aparato-fotografico-del-telescopio-mailhat/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:09:35 +0000</pubDate>
				<category><![CDATA[Museo]]></category>
		<category><![CDATA[Óptica y Fotografía]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2473</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_2 et_section_regular" >
				
				
				
				
				
				
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				<div class="et_pb_text_inner">Aparato fotográfico del Telescopio Mailhat</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Mailhat &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> fines siglo XIX<br />
<strong>Uso:</strong> Tomar fotografías en placas de vidrio a través del telescopio Mailhat</h2></div>
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				<div class="et_pb_text_inner"><strong>Características</strong>: este accesorio ubicado en el tubo fotográfico del astrografico Mailhat permitía obtener registros astronómicos sobre placas de vidrio con emulsión fotográfica. El mismo consiste en una platina perforada sobre la que se encuentra un ocular que permite enfocar el sistema. La placa de vidrio es montada sobre un portanegativos que se desliza sobre una corredera y es sujetada por un sistema con resortes en una posición neutra. Una vez puesto en foco el sistema el disparador libera el porta negativos que corre la placa de vidrio posicionandola sobre el orificio de exposición. Dado que el dispositivo no cuenta con un obturador, la interrupción de la exposición fotográfica se obtenía tapando el objetivo del telescopio con una cubierta delantera accionada con una varilla desde el ocular.</div>
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		<title>Espectroscopio</title>
		<link>https://observatoriosanjose.com.ar/wp/espectroscopio/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:08:52 +0000</pubDate>
				<category><![CDATA[Museo]]></category>
		<category><![CDATA[Óptica y Fotografía]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2472</guid>

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				<div class="et_pb_text_inner"><p>Espectroscopio</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Ducretet &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> 1900?<br /><strong>Uso:</strong> Descomponer la luz en un espectro lumínico a través del cual se puedan analizar los distintos componentes químicos de un cuerpo.</h2></div>
			</div><div class="et_pb_module et_pb_divider et_pb_divider_4 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_13">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_13  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_9  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p><strong>Características</strong>: <span>La luz proveniente del cuerpo a examinar pasa por un rendija y un tubo de colimación, el cual envía el rayo de luz a una serie de prismas que en el interior del aparato la descomponen en un espectro que será luego observado el ocular de salida. Al espectro se superpone una escala graduada mediante la cual se puede medir la longitud de onda de las diferentes líneas que lo componen. Cada elemento químico, al ser calentado o excitado eléctricamente, emite una serie de líneas características, según la temperatura, presión y campo magnético al que se encuentre sometido. Así entonces con la observación de la luz que emite un cuerpo no solo podemos saber de que elemento esta compuesto si no a que ambiente físico esta sometido. Con aparatos como este unidos a telescopios, los astrónomos del siglo XIX pudieron descubrir de que elementos estaba compuestas las diferentes estrellas, sus temperaturas y campos magnéticos, aunque las mismas estuvieran a distancias enormes.</span></p></div>
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				<div class="et_pb_gallery_items et_post_gallery clearfix" data-per_page="4"><div class="et_pb_gallery_item et_pb_grid_item et_pb_bg_layout_light et_pb_gallery_item_2_0">
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					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio02.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio02.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio02.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2773" />
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					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio03.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio03.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio03.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2774" />
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					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio04.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio04.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/espectroscopio04.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2775" />
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			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_14">
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				<div class="et_pb_module et_pb_divider et_pb_divider_5 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_15">
				<div class="et_pb_column et_pb_column_1_2 et_pb_column_15  et_pb_css_mix_blend_mode_passthrough">
				
				
				
				
				<div class="et_pb_button_module_wrapper et_pb_button_4_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_4 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/optica-y-fotografia/">Volver a Óptica y Fotografía</a>
			</div>
			</div><div class="et_pb_column et_pb_column_1_2 et_pb_column_16  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_button_module_wrapper et_pb_button_5_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_5 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/museo/">Volver al Museo</a>
			</div>
			</div>
				
				
				
				
			</div>
				
				
			</div><div class="et_pb_section et_pb_section_5 et_pb_section_parallax et_pb_with_background et_section_regular" >
				
				<span class="et_parallax_bg_wrap"><span
						class="et_parallax_bg"
						style="background-image: url(https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/01/titulo.jpg);"
					></span></span>
				
				
				
				
				<div class="et_pb_row et_pb_row_17 et_pb_row_fullwidth et_animated et_pb_equal_columns et_pb_gutters1">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_17  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_10  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p> <br />Seguinos en las redes</p>
<p>&nbsp;</p></div>
			</div><div class="et_pb_module et_pb_text et_pb_text_11  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p>Conocé todas las novedades.</p>
<p>&nbsp;</p></div>
			</div><ul class="et_pb_module et_pb_social_media_follow et_pb_social_media_follow_2 clearfix  et_pb_text_align_center et_pb_bg_layout_dark has_follow_button">
				
				
				
				
				<li
            class='et_pb_social_media_follow_network_8 et_pb_social_icon et_pb_social_network_link  et-social-facebook'><a
              href='https://www.facebook.com/observatoriosj/'
              class='icon et_pb_with_border'
              title='Seguir en Facebook'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.facebook.com/observatoriosj/" class="follow_button" title="Facebook" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_9 et_pb_social_icon et_pb_social_network_link  et-social-twitter'><a
              href='https://twitter.com/observatoriosj'
              class='icon et_pb_with_border'
              title='Seguir en Twitter'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://twitter.com/observatoriosj" class="follow_button" title="Twitter" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_10 et_pb_social_icon et_pb_social_network_link  et-social-instagram'><a
              href='https://www.instagram.com/observatoriosanjose'
              class='icon et_pb_with_border'
              title='Seguir en Instagram'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.instagram.com/observatoriosanjose" class="follow_button" title="Instagram" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_11 et_pb_social_icon et_pb_social_network_link  et-social-youtube'><a
              href='https://www.youtube.com/user/OSJVIDEO'
              class='icon et_pb_with_border'
              title='Seguir en Youtube'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.youtube.com/user/OSJVIDEO" class="follow_button" title="Youtube" target="_blank">Seguir</a></li>
			</ul>
			</div>
				
				
				
				
			</div>
				
				
			</div></p>
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		<item>
		<title>Higrómetro de M. Alluard</title>
		<link>https://observatoriosanjose.com.ar/wp/higrometro-de-m-alluard/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:05:50 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2471</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_6 et_section_regular" >
				
				
				
				
				
				
				<div class="et_pb_row et_pb_row_18">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_18  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_12  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner">Higrómetro de M. Alluard</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Ducretet &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> fines siglo XIX<br />
<strong>Uso:</strong> Medir la temperatura</h2></div>
			</div><div class="et_pb_module et_pb_divider et_pb_divider_6 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_19">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_19  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_13  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><strong>Características</strong>: En el prisma central de latón era llenado de eter, el cual al ser obligado a evaporarse mediante una corriente de aire insuflada mediante la pera de goma bajaba la temperatura del recipiente. Al llegar a la temperatura de rocío, la humedad ambiente se condensaba sobre las paredes del prima que era contrastado contra la platina fija de comparación. La temperatura de rocío era así medida por el termómetro que se encontraba sumergido en el interior del prisma. Adicionando a esto la temperatura ambiente y efectuando algunos cálculos se determinaba la humedad ambiente en una forma muy exacta.</div>
			</div><div class="et_pb_module et_pb_gallery et_pb_gallery_3  et_pb_bg_layout_light et_pb_gallery_grid">
				<div class="et_pb_gallery_items et_post_gallery clearfix" data-per_page="4"><div class="et_pb_gallery_item et_pb_grid_item et_pb_bg_layout_light et_pb_gallery_item_3_0">
				<div class='et_pb_gallery_image landscape'>
					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio02.jpeg" title="p_rocio02">
					<img loading="lazy" decoding="async" width="250" height="333" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio02.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio02.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio02.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2703" />
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					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio03.jpeg" title="p_rocio03">
					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio03.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio03.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/p_rocio03.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2704" />
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				<div class="et_pb_module et_pb_divider et_pb_divider_7 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_21">
				<div class="et_pb_column et_pb_column_1_2 et_pb_column_21  et_pb_css_mix_blend_mode_passthrough">
				
				
				
				
				<div class="et_pb_button_module_wrapper et_pb_button_6_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_6 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/meteorologia/">Volver a Meteorología</a>
			</div>
			</div><div class="et_pb_column et_pb_column_1_2 et_pb_column_22  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_button_module_wrapper et_pb_button_7_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_7 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/museo/">Volver al Museo</a>
			</div>
			</div>
				
				
				
				
			</div>
				
				
			</div><div class="et_pb_section et_pb_section_7 et_pb_section_parallax et_pb_with_background et_section_regular" >
				
				<span class="et_parallax_bg_wrap"><span
						class="et_parallax_bg"
						style="background-image: url(https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/01/titulo.jpg);"
					></span></span>
				
				
				
				
				<div class="et_pb_row et_pb_row_23 et_pb_row_fullwidth et_animated et_pb_equal_columns et_pb_gutters1">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_23  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_14  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p> <br />Seguinos en las redes</p>
<p>&nbsp;</p></div>
			</div><div class="et_pb_module et_pb_text et_pb_text_15  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p>Conocé todas las novedades.</p>
<p>&nbsp;</p></div>
			</div><ul class="et_pb_module et_pb_social_media_follow et_pb_social_media_follow_3 clearfix  et_pb_text_align_center et_pb_bg_layout_dark has_follow_button">
				
				
				
				
				<li
            class='et_pb_social_media_follow_network_12 et_pb_social_icon et_pb_social_network_link  et-social-facebook'><a
              href='https://www.facebook.com/observatoriosj/'
              class='icon et_pb_with_border'
              title='Seguir en Facebook'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.facebook.com/observatoriosj/" class="follow_button" title="Facebook" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_13 et_pb_social_icon et_pb_social_network_link  et-social-twitter'><a
              href='https://twitter.com/observatoriosj'
              class='icon et_pb_with_border'
              title='Seguir en Twitter'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://twitter.com/observatoriosj" class="follow_button" title="Twitter" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_14 et_pb_social_icon et_pb_social_network_link  et-social-instagram'><a
              href='https://www.instagram.com/observatoriosanjose'
              class='icon et_pb_with_border'
              title='Seguir en Instagram'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.instagram.com/observatoriosanjose" class="follow_button" title="Instagram" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_15 et_pb_social_icon et_pb_social_network_link  et-social-youtube'><a
              href='https://www.youtube.com/user/OSJVIDEO'
              class='icon et_pb_with_border'
              title='Seguir en Youtube'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.youtube.com/user/OSJVIDEO" class="follow_button" title="Youtube" target="_blank">Seguir</a></li>
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			</item>
		<item>
		<title>Termómetro</title>
		<link>https://observatoriosanjose.com.ar/wp/termometro/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:05:11 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2466</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_8 et_section_regular" >
				
				
				
				
				
				
				<div class="et_pb_row et_pb_row_24">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_24  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_16  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner">Termómetro</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> &#8211; <strong>Origen:</strong> posiblemente Buenos Aires &#8211; <strong>Fecha:</strong> siglo XX<br />
<strong>Uso:</strong> medir la temperatura</h2></div>
			</div><div class="et_pb_module et_pb_divider et_pb_divider_8 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_25">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_25  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_17  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><strong>Características</strong>: Se trata de un termómetro centesimal con columna de alcohol sobre platina de madera pintada, el bulbo del mismo se encuentra protegido por una cazoleta de metal agujereado. La cabecera y el pie de este instrumento presenta una filigrana decorativa en color dorado. Este modelo de termómetro era usualmente entregado como obsequio de fin de año a los clientes en las tiendas del Buenos Aires de principios del siglo XX. </div>
			</div><div class="et_pb_module et_pb_gallery et_pb_gallery_4  et_pb_bg_layout_light et_pb_gallery_grid">
				<div class="et_pb_gallery_items et_post_gallery clearfix" data-per_page="4"><div class="et_pb_gallery_item et_pb_grid_item et_pb_bg_layout_light et_pb_gallery_item_4_0">
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					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/termometro02.jpeg" title="termometro02">
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<p>&nbsp;</p></div>
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		<item>
		<title>Termómetro de máximas y mínimas</title>
		<link>https://observatoriosanjose.com.ar/wp/termometro-de-maximas-y-minimas/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:03:40 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2465</guid>

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										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_10 et_section_regular" >
				
				
				
				
				
				
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				<div class="et_pb_text_inner">Termómetro de máximas y mínimas</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong>  &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> fines siglo XIX<br />
<strong>Uso:</strong> Determinar temperaturas ambientes máximas y mínimas</h2></div>
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				<div class="et_pb_text_inner"><strong>Características</strong>: conocido originalmente como Termotrógrafo de Six o Belliani, este aparto esta compuesto de un tubo capilar doblado en U, lleno de mercurio en su parte inferior, con dos índices móviles y el extremo superior con una ampolla llena de alcohol y aire. Al subir la temperatura el alcohol se dilata desplazando al mercurio quien empuja al índice que quedara en la máxima temperatura registrada. Por el contrario si la temperatura desciende el aire se contrae empujando al otro índice hasta la posición de mínima. Este instrumento debido a su escasa precisión solo era utilizado par la determinación de temperaturas ambientes.</div>
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<p>&nbsp;</p></div>
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<p>&nbsp;</p></div>
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		<item>
		<title>Psicrómetro</title>
		<link>https://observatoriosanjose.com.ar/wp/psicrometro/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:02:47 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2464</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_12 et_section_regular" >
				
				
				
				
				
				
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				<div class="et_pb_text_inner">Psicrómetro</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Otto Hess &#8211; <strong>Origen:</strong> Aleman &#8211; <strong>Fecha:</strong> 1960<br />
<strong>Uso:</strong> Determinación de temperatura y humedad ambiente.</h2></div>
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				<div class="et_pb_text_inner"><strong>Características</strong>: Este aparto cuenta con dos termómetros de mercurio montados en forma paralela sobre una platina graduada de opalina inserta en un chasis de chapa de hierro. El primer termómetro es llamado de bulbo seco ya que se encuentra expuesto directamente al ambiente midiendo la temperatura de este. El segundo es llamado de bulbo húmedo. Tiene una gasa que rodea al bulbo y esta conectada a una pipeta con agua, de este modo registra la temperatura producida por la evaporación de la misma, que enfría el bulbo del termómetro. A mayor sequedad del ambiente será mayor la diferencia de temperatura entre ambos termómetros. Con el uso de tablas psicrometricas y conociendo la presión atmosférica se puede determinar con ambas temperaturas el grado de humedad relativa del ambiente. El instrumento lleva la inscripción en el encabezado de la platina de opalina «Psychrométre Centesimal &#8211; Otto Hess y Cía &#8211; Buenos Aires».</div>
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				<div class="et_pb_text_inner"><p> <br />Seguinos en las redes</p>
<p>&nbsp;</p></div>
			</div><div class="et_pb_module et_pb_text et_pb_text_27  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p>Conocé todas las novedades.</p>
<p>&nbsp;</p></div>
			</div><ul class="et_pb_module et_pb_social_media_follow et_pb_social_media_follow_6 clearfix  et_pb_text_align_center et_pb_bg_layout_dark has_follow_button">
				
				
				
				
				<li
            class='et_pb_social_media_follow_network_24 et_pb_social_icon et_pb_social_network_link  et-social-facebook'><a
              href='https://www.facebook.com/observatoriosj/'
              class='icon et_pb_with_border'
              title='Seguir en Facebook'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.facebook.com/observatoriosj/" class="follow_button" title="Facebook" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_25 et_pb_social_icon et_pb_social_network_link  et-social-twitter'><a
              href='https://twitter.com/observatoriosj'
              class='icon et_pb_with_border'
              title='Seguir en Twitter'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://twitter.com/observatoriosj" class="follow_button" title="Twitter" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_26 et_pb_social_icon et_pb_social_network_link  et-social-instagram'><a
              href='https://www.instagram.com/observatoriosanjose'
              class='icon et_pb_with_border'
              title='Seguir en Instagram'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.instagram.com/observatoriosanjose" class="follow_button" title="Instagram" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_27 et_pb_social_icon et_pb_social_network_link  et-social-youtube'><a
              href='https://www.youtube.com/user/OSJVIDEO'
              class='icon et_pb_with_border'
              title='Seguir en Youtube'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.youtube.com/user/OSJVIDEO" class="follow_button" title="Youtube" target="_blank">Seguir</a></li>
			</ul>
			</div>
				
				
				
				
			</div>
				
				
			</div></p>
]]></content:encoded>
					
		
		
			</item>
		<item>
		<title>Barómetro de cuadrante</title>
		<link>https://observatoriosanjose.com.ar/wp/barometro-de-cuadrante/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:02:11 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2463</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_14 et_section_regular" >
				
				
				
				
				
				
				<div class="et_pb_row et_pb_row_42">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_42  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_28  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner">Barómetro de cuadrante</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Ducretet &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> fines siglo XIX<br />
<strong>Uso:</strong> Medir la presión atmosférica</h2></div>
			</div><div class="et_pb_module et_pb_divider et_pb_divider_14 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_43">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_43  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_29  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><strong>Características</strong>: El barómetro de cuadrante funciona merced un tubo interior de sección elíptica  enrollado en forma de semicírculo, dentro del cuál se ha efectuado vacío. El tubo posee un extremo fijo y otro libre, que cambia su posición al dilatarse o contraerse según sea la presión atmosférica que es ejercida en el exterior del mismo. Mediante un sistema de palancas y engranajes este cambio de posición es trasladado a la aguja que marca la presión atmosférica sobre el cuadrante de lectura. EL tubo lleva  el nombre de “Bourdon” en honor a su inventor y muchas veces también es usado para dar nombre a este tipo barómetro. Si bien este equipo no alcanza la exactitud de los barómetros de columna su popularidad se debe principalmente a lo compacto y sencillo de usar, lo que permitió su uso a bordo de barcos para predecir los cambios climáticos. El instrumento lleva en su escala la marca E. Ducretet &#8211; París, acompañada de dos sellos, el primero con la leyenda «Médaille d´or Exposition 1840 &#8211; E. Bourdon et Richard Brevetes &#8211; París» y en el segundo se lee «Exposition Universelle Londres 1851 &#8211; Grande Medaille de 1º Classe». En la parte interior lleva el cuño «Brevetes S.G.D.G. RF &#8211; París» Nº serie 19726.</div>
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				<div class="et_pb_gallery_items et_post_gallery clearfix" data-per_page="4"><div class="et_pb_gallery_item et_pb_grid_item et_pb_bg_layout_light et_pb_gallery_item_7_0">
				<div class='et_pb_gallery_image landscape'>
					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante02.jpeg" title="b_cuadrante02">
					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante02.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante02.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante02.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2718" />
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					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante03.jpeg" title="b_cuadrante03">
					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante03.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante03.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante03.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2719" />
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					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante04.jpeg" title="b_cuadrante04">
					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante04.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante04.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_cuadrante04.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2720" />
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				<div class="et_pb_module et_pb_divider et_pb_divider_15 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_45">
				<div class="et_pb_column et_pb_column_1_2 et_pb_column_45  et_pb_css_mix_blend_mode_passthrough">
				
				
				
				
				<div class="et_pb_button_module_wrapper et_pb_button_14_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_14 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/meteorologia/">Volver a Meteorología</a>
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			</div><div class="et_pb_column et_pb_column_1_2 et_pb_column_46  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_button_module_wrapper et_pb_button_15_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_15 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/museo/">Volver al Museo</a>
			</div>
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			</div><div class="et_pb_section et_pb_section_15 et_pb_section_parallax et_pb_with_background et_section_regular" >
				
				<span class="et_parallax_bg_wrap"><span
						class="et_parallax_bg"
						style="background-image: url(https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/01/titulo.jpg);"
					></span></span>
				
				
				
				
				<div class="et_pb_row et_pb_row_47 et_pb_row_fullwidth et_animated et_pb_equal_columns et_pb_gutters1">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_47  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_30  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p> <br />Seguinos en las redes</p>
<p>&nbsp;</p></div>
			</div><div class="et_pb_module et_pb_text et_pb_text_31  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p>Conocé todas las novedades.</p>
<p>&nbsp;</p></div>
			</div><ul class="et_pb_module et_pb_social_media_follow et_pb_social_media_follow_7 clearfix  et_pb_text_align_center et_pb_bg_layout_dark has_follow_button">
				
				
				
				
				<li
            class='et_pb_social_media_follow_network_28 et_pb_social_icon et_pb_social_network_link  et-social-facebook'><a
              href='https://www.facebook.com/observatoriosj/'
              class='icon et_pb_with_border'
              title='Seguir en Facebook'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.facebook.com/observatoriosj/" class="follow_button" title="Facebook" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_29 et_pb_social_icon et_pb_social_network_link  et-social-twitter'><a
              href='https://twitter.com/observatoriosj'
              class='icon et_pb_with_border'
              title='Seguir en Twitter'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://twitter.com/observatoriosj" class="follow_button" title="Twitter" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_30 et_pb_social_icon et_pb_social_network_link  et-social-instagram'><a
              href='https://www.instagram.com/observatoriosanjose'
              class='icon et_pb_with_border'
              title='Seguir en Instagram'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.instagram.com/observatoriosanjose" class="follow_button" title="Instagram" target="_blank">Seguir</a></li><li
            class='et_pb_social_media_follow_network_31 et_pb_social_icon et_pb_social_network_link  et-social-youtube'><a
              href='https://www.youtube.com/user/OSJVIDEO'
              class='icon et_pb_with_border'
              title='Seguir en Youtube'
               target="_blank"><span
                class='et_pb_social_media_follow_network_name'
                aria-hidden='true'
                >Seguir</span></a><a href="https://www.youtube.com/user/OSJVIDEO" class="follow_button" title="Youtube" target="_blank">Seguir</a></li>
			</ul>
			</div>
				
				
				
				
			</div>
				
				
			</div></p>
]]></content:encoded>
					
		
		
			</item>
		<item>
		<title>Barómetro de cubeta simple</title>
		<link>https://observatoriosanjose.com.ar/wp/barometro-de-cubeta-simple/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:01:25 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2462</guid>

					<description><![CDATA[]]></description>
										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_16 et_section_regular" >
				
				
				
				
				
				
				<div class="et_pb_row et_pb_row_48">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_48  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_32  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner">Barómetro de cubeta simple</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> Ducretet &#8211; <strong>Origen:</strong> Francia &#8211; <strong>Fecha:</strong> fines siglo XIX<br />
<strong>Uso:</strong> Medir de la presión</h2></div>
			</div><div class="et_pb_module et_pb_divider et_pb_divider_16 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
			</div>
				
				
				
				
			</div><div class="et_pb_row et_pb_row_49">
				<div class="et_pb_column et_pb_column_4_4 et_pb_column_49  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_33  et_pb_text_align_left et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><strong>Características</strong>: El barómetro de cubeta funciona por el principio de Torricelli, autor del mismo y padre de la neumática moderna. Un tubo cerrado por un extremo es llenado con mercurio y luego invertido dejando el extremo cerrado en la parte superior y el abierto en la inferior sumergido en una cubeta con mercurio. De esta forma en la parte superior del tubo tendremos vacío y en la inferior la presión atmosférica, siendo la altura de la columna de mercurio resultante, efecto de la presión atmosférica. Al aumentar la presión atmosférica esta “empujara” al mercurio de la cubeta haciendo subir la columna y bajara en el caso de que la presión atmosférica disminuya. La presión atmosférica leída en este instrumento se efectúa a través de una regleta adjunta y se expresa en milímetros de mercurio. Este barómetro cuenta con la imprecisión que se origina al suponer el nivel cero de la cubeta invariable lo cual no es cierto ya que el mismo aumenta o diminuye según sea  la variación de la misma columna. Para minimizar este error las cubetas se hacen de un diámetro relativamente grande respecto al tubo. A efectos de corregir las dilataciones producidas por la temperatura cuenta con dos termómetros, uno de alcohol de 45º a -10º y otro de mercurio de 45º a -5º.  El instrumento lleva en su parte superior la marca E. Ducretet &#8211; París. </div>
			</div><div class="et_pb_module et_pb_gallery et_pb_gallery_8  et_pb_bg_layout_light et_pb_gallery_grid">
				<div class="et_pb_gallery_items et_post_gallery clearfix" data-per_page="4"><div class="et_pb_gallery_item et_pb_grid_item et_pb_bg_layout_light et_pb_gallery_item_8_0">
				<div class='et_pb_gallery_image landscape'>
					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli04.jpeg" title="b_torricelli04">
					<img loading="lazy" decoding="async" width="250" height="333" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli04.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli04.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli04.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2725" />
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					<a href="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli02.jpeg" title="b_torricelli02">
					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli02.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli02.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli02.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2723" />
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					<img loading="lazy" decoding="async" width="333" height="250" src="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli03.jpeg" srcset="https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli03.jpeg 479w, https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/02/b_torricelli03.jpeg 480w" sizes="auto, (max-width:479px) 479px, 100vw" class="wp-image-2724" />
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				<div class="et_pb_module et_pb_divider et_pb_divider_17 et_pb_divider_position_ et_pb_space"><div class="et_pb_divider_internal"></div></div>
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				<div class="et_pb_button_module_wrapper et_pb_button_16_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_16 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/meteorologia/">Volver a Meteorología</a>
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				<div class="et_pb_button_module_wrapper et_pb_button_17_wrapper et_pb_button_alignment_center et_pb_module ">
				<a class="et_pb_button et_pb_button_17 et_pb_bg_layout_light" href="https://observatoriosanjose.com.ar/wp/museo/">Volver al Museo</a>
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						class="et_parallax_bg"
						style="background-image: url(https://observatoriosanjose.com.ar/wp/wp-content/uploads/2022/01/titulo.jpg);"
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				<div class="et_pb_column et_pb_column_4_4 et_pb_column_53  et_pb_css_mix_blend_mode_passthrough et-last-child">
				
				
				
				
				<div class="et_pb_module et_pb_text et_pb_text_34  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p> <br />Seguinos en las redes</p>
<p>&nbsp;</p></div>
			</div><div class="et_pb_module et_pb_text et_pb_text_35  et_pb_text_align_center et_pb_bg_layout_light">
				
				
				
				
				<div class="et_pb_text_inner"><p>Conocé todas las novedades.</p>
<p>&nbsp;</p></div>
			</div><ul class="et_pb_module et_pb_social_media_follow et_pb_social_media_follow_8 clearfix  et_pb_text_align_center et_pb_bg_layout_dark has_follow_button">
				
				
				
				
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            class='et_pb_social_media_follow_network_32 et_pb_social_icon et_pb_social_network_link  et-social-facebook'><a
              href='https://www.facebook.com/observatoriosj/'
              class='icon et_pb_with_border'
              title='Seguir en Facebook'
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		<title>Barómetro de Fortín</title>
		<link>https://observatoriosanjose.com.ar/wp/barometro-de-fortin/</link>
		
		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Fri, 18 Feb 2022 04:00:07 +0000</pubDate>
				<category><![CDATA[Meteorología]]></category>
		<category><![CDATA[Museo]]></category>
		<guid isPermaLink="false">https://observatoriosanjose.com.ar/wp/?p=2445</guid>

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										<content:encoded><![CDATA[<p><div class="et_pb_section et_pb_section_18 et_section_regular" >
				
				
				
				
				
				
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				<div class="et_pb_text_inner">Barómetro de Fortín</p>
<p>&nbsp;</p>
<h2><strong>Marca:</strong> J. Salleron &#8211; <strong>Origen:</strong> París &#8211; Francia &#8211; <strong>Fecha:</strong> fines siglo XIX<br />
<strong>Uso:</strong> Medir la presión atmosférica</h2></div>
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				<div class="et_pb_text_inner"><strong>Características</strong>: El barómetro de Fortin funciona, al igual que el de cubeta, por el principio de Torricelli, mas su mejora consiste en eliminar el problema de la variación del cero del que adolece el segundo. El fondo de la cubeta es móvil, ya que esta formado por una bolsa de gamuza que gracias a un tornillo, solidario al mismo, puede subir o bajar. Antes de efectuar la medición se ajusta el instrumento, subiendo o bajando el fondo de la cubeta y enrasando el nivel de mercurio con un una punta fija de marfil que marca el cero de la escala. De esta mera se elimina la variación de nivel de la cubeta por la diferencia de altura de la columna. El aparato, lleva asociado un termómetro (desaparecido) que servía para efectuar correcciones por dilatación del mismo. Es un instrumento de gran precisión mas por los ajustes delicados que son requeridos es solo posible de ser usado en laboratorios o estaciones fijas. La cazoleta protectora del termómetro lleva grabada la siguiente inscripción «J. Salleron, 24 Pavée (Au Marais) París» y su número de serie es 475.</div>
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