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      <title>La historia de la metrología by JULIO ABRAHAM JIMENEZ RAMIREZ</title>
      <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v</link>
      <description>Evolucion de la metrología </description>
      <language>en-us</language>
      <pubDate>2021-10-05 02:25:45 UTC</pubDate>
      <lastBuildDate>2026-03-17 10:34:41 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>5. 000 a. C.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791485997</link>
         <description><![CDATA[<div>Comienzan a utilizarse las unidades de medida. El hombre eligió su propio cuerpo como base para las primeras unidades de medida.</div>]]></description>
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         <pubDate>2021-10-05 02:30:26 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791485997</guid>
      </item>
      <item>
         <title>2.500 a. C.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791559563</link>
         <description><![CDATA[<div>Primer patrón sin fundamento corporal. Es una regla graduada que reposa en las rodillas de dos estatuas del Rey-Dios Gudea. Constituía el patrón legal de la unidad de Lagash.</div>]]></description>
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         <pubDate>2021-10-05 02:59:24 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791559563</guid>
      </item>
      <item>
         <title>2.750 a. C.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791584206</link>
         <description><![CDATA[<div>Unidad de longitud más antigua, el "Real Codo Egipcio"</div><div><br><br></div>]]></description>
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         <pubDate>2021-10-05 03:09:42 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791584206</guid>
      </item>
      <item>
         <title>1.100. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791589936</link>
         <description><![CDATA[<div>Se define la yarda inglesa por la distancia comprendida entre la punta de la nariz de Enrique I hasta su dedo pulgar con el brazo totalmente estirado.&nbsp;</div><div><br><br></div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:11:57 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791589936</guid>
      </item>
      <item>
         <title>1.287-1.327.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791594533</link>
         <description><![CDATA[<div>Entre los reinados de Enrique III y Eduardo II se dicto diferente normativa, basada en la longitud del pie del regente en ese momento.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:13:51 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791594533</guid>
      </item>
      <item>
         <title>1.610.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791602352</link>
         <description><![CDATA[<div>Galileo descubre la ley del péndulo y fabrica un telescopio de potencia.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:16:02 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791602352</guid>
      </item>
      <item>
         <title> 1.614. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791607558</link>
         <description><![CDATA[<div>John Napier realiza el descubrimiento matemático de los logaritmos. Basándose en ellos, William Oughtred construyó la primera regla deslizante.&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 03:18:16 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791607558</guid>
      </item>
      <item>
         <title>1.631. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791608494</link>
         <description><![CDATA[<div>Pierre Vernier descubre el principio de división del tornillo micrométrico. Gascoigne fue el primero en utilizar el micrómetro.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:18:39 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791608494</guid>
      </item>
      <item>
         <title>1.668. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791662647</link>
         <description><![CDATA[<div>&nbsp;Se crea en Francia un patrón de longitud denominado Toesa de Chatelet, formado por una barra de hierro empotrada en el exterior de un muro del Gran Chatelet de París.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:40:15 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791662647</guid>
      </item>
      <item>
         <title>1.791. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791664449</link>
         <description><![CDATA[<div>La Asamblea Nacional Francesa adopta un sistema de medidas cuya unidad básica es el metro.Se basaba en dos unidades fundamentales: El metro y el kilogramo.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:41:03 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791664449</guid>
      </item>
      <item>
         <title>1.799. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791665727</link>
         <description><![CDATA[<div>Se deposita en los archivos de Francia el primer prototipo del metro, formado por una regla de platino sin inscripciones ni marcas.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:41:37 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791665727</guid>
      </item>
      <item>
         <title>1.849. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791670854</link>
         <description><![CDATA[<div>España se adhiere al sistema métrico definido en Francia.&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 03:43:47 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791670854</guid>
      </item>
      <item>
         <title>1.840-1.850.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791676188</link>
         <description><![CDATA[<div>Henry Maudslay construye un micrómetro con una precisión de la milésima parte de una pulgada.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:46:06 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791676188</guid>
      </item>
      <item>
         <title>1.868. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791679831</link>
         <description><![CDATA[<div>Seller perfecciona y estandariza la rosca de 60º y Whitworth lo hace con la de 55º en Gran Bretaña. Además, Whitworth contribuyó con sus calibres intercambiables y la máquina medidora.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 03:47:29 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791679831</guid>
      </item>
      <item>
         <title>1.870. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791684296</link>
         <description><![CDATA[<div>Wilmot diseñó un micrómetro que medía milésimas. J. R. Brown y LucianSharpediseñan el primer micrómetro mecánico.</div>]]></description>
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         <pubDate>2021-10-05 03:49:31 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791684296</guid>
      </item>
      <item>
         <title>1.892. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791723870</link>
         <description><![CDATA[<div>Albert Abraham Michelson desarrolló el interferómetrofac.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 04:08:48 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791723870</guid>
      </item>
      <item>
         <title>1.896. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791728049</link>
         <description><![CDATA[<div>&nbsp;Carl Edward Johanson creó un juego de galgas en incremento uniforme. El primer juegode galgas, con una exactitud de 0.001mm se utilizó en la factoría de armas.</div>]]></description>
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         <pubDate>2021-10-05 04:10:49 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791728049</guid>
      </item>
      <item>
         <title>1.910.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791730706</link>
         <description><![CDATA[<div>Solex idea la amplificación neumática. El nacimiento de la industria del automóvil, la aplicación de los sistemas de producción en masa y la industria militar proporcionaron un fuerte empuje a la metrología en el siglo XX.</div><div><br></div><div><br></div>]]></description>
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         <pubDate>2021-10-05 04:12:14 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791730706</guid>
      </item>
      <item>
         <title>1.929.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791733912</link>
         <description><![CDATA[<div>Aparece la electrogalga.&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 04:13:54 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791733912</guid>
      </item>
      <item>
         <title>1.930. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791735948</link>
         <description><![CDATA[<div>Abbot fabrica los primeros instrumentos de medida geométrica de superficies.&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 04:14:53 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791735948</guid>
      </item>
      <item>
         <title> 1.949. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791738521</link>
         <description><![CDATA[<div>Se inicia la aplicación del control estadístico de la calidad.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 04:16:00 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791738521</guid>
      </item>
      <item>
         <title>1.952. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791741211</link>
         <description><![CDATA[<div>Se comienza a utilizar la electrónica para conseguir mayores amplificaciones.&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 04:17:21 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791741211</guid>
      </item>
      <item>
         <title>1.959. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791743120</link>
         <description><![CDATA[<div>Aparece la primera máquina herramienta de control numérico con una exactitud de 0.001" y un sistemas de dos coordenadas x, y</div><div><br></div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1386287429/ae60c8e92d2dddea74aad155c289b053/image.png" />
         <pubDate>2021-10-05 04:18:06 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791743120</guid>
      </item>
      <item>
         <title>1.960.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791747259</link>
         <description><![CDATA[<div>En la conferencia de pesas y medidas, se adopta como definición del metro aquella que lo establece como un determinado número de longitudes de onda en el vacío de la radiación.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 04:19:58 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791747259</guid>
      </item>
      <item>
         <title> 1.965. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791748901</link>
         <description><![CDATA[<div>Se añade un tercer eje a las Máquinas Medidoras de Coordenadas (MMC) y se mejoran estas.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 04:20:46 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791748901</guid>
      </item>
      <item>
         <title>1.969. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791751219</link>
         <description><![CDATA[<div>Primera MMC controlada por ordenador.&nbsp;</div><div><br></div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1386287429/35a272c6a5996c9ded20afb2a34dda1c/image.png" />
         <pubDate>2021-10-05 04:21:58 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791751219</guid>
      </item>
      <item>
         <title>1.980.</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791753652</link>
         <description><![CDATA[<div>Se aplica el láser en metrología dimensional.</div><div><br></div>]]></description>
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         <pubDate>2021-10-05 04:23:11 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791753652</guid>
      </item>
      <item>
         <title> 1.981. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791756951</link>
         <description><![CDATA[<div>Se introduce en el control de las MMC procesadores de bajo coste, abaratando lasMMC.&nbsp;</div><div><br></div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1386287429/b3c57dcb6db8b58912e2e586edfa20d2/image.png" />
         <pubDate>2021-10-05 04:24:46 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791756951</guid>
      </item>
      <item>
         <title>1.983. </title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791760440</link>
         <description><![CDATA[<div>Se adopta la definición actual del metro: Distancia recorrida por la luz en el vacíodurante 29792458-1 segundos.&nbsp;</div>]]></description>
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         <pubDate>2021-10-05 04:26:25 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791760440</guid>
      </item>
      <item>
         <title>Actualmente los avances tecnológicos de las MMC se focalizan en llevar a la práctica relacionesentre sistemas de inspección flexibles</title>
         <author>imct21jjimenezr</author>
         <link>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791762555</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-10-05 04:27:29 UTC</pubDate>
         <guid>https://padlet.com/imct21jjimenezr/xflkvf2705efpx6v/wish/1791762555</guid>
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