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René Descartes, Double Rainbow,1637

René Descartes' sketch of how primary and secondary rainbows are formed. Theodoric of Freiberg is known to have given an accurate theoretical explanation of both the primary and secondary rainbows in 1307. He explained the primary rainbow, noting that when sunlight falls on individual drops of moisture, the rays undergo two refractions and one reflection  before transmission into the eye of the observer. He explained the secondary rainbow through a similar analysis involving two refractions and two reflections.  René Descartes' 1637 treatise, Discourse on Method, further advanced this explanation. Knowing that the size of raindrops did not appear to affect the observed rainbow, he experimented with passing rays of light through a large glass sphere filled with water. By measuring the angles that the rays emerged, he concluded that the primary bow was caused by a single internal reflection inside the raindrop and that a secondary bow could be caused by two internal reflections. He supported this conclusion with a derivation of the law of refraction and correctly calculated the angles for both bows. This image has been enhanced.
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Título:
René Descartes, Double Rainbow,1637
Descripción:
Traducción automática: Bosquejo de René Descartes de cómo se forman los arcoíris primarios y secundarios. Se sabe que Teodorico de Freiberg dio una explicación teórica precisa de los arco iris primario y secundario en 1307. Explicó el arco iris primario y señaló que cuando la luz del sol incide sobre gotas individuales de humedad, los rayos experimentan dos refracciones y una reflexión antes de transmitirse a el ojo del observador. Explicó el arco iris secundario a través de un análisis similar que involucra dos refracciones y dos reflejos. El tratado de René Descartes de 1637, Discurso sobre el método, avanzó aún más en esta explicación. Sabiendo que el tamaño de las gotas de lluvia no parecía afectar el arco iris observado, experimentó pasando rayos de luz a través de una gran esfera de vidrio llena de agua. Al medir los ángulos de salida de los rayos, concluyó que el arco primario fue causado por un solo reflejo interno dentro de la gota de lluvia y que un arco secundario podría ser causado por dos reflejos internos. Apoyó esta conclusión con una derivación de la ley de refracción y calculó correctamente los ángulos para ambos arcos. Esta imagen ha sido mejorada
René Descartes' sketch of how primary and secondary rainbows are formed. Theodoric of Freiberg is known to have given an accurate theoretical explanation of both the primary and secondary rainbows in 1307. He explained the primary rainbow, noting that when sunlight falls on individual drops of moisture, the rays undergo two refractions and one reflection before transmission into the eye of the observer. He explained the secondary rainbow through a similar analysis involving two refractions and two reflections. René Descartes' 1637 treatise, Discourse on Method, further advanced this explanation. Knowing that the size of raindrops did not appear to affect the observed rainbow, he experimented with passing rays of light through a large glass sphere filled with water. By measuring the angles that the rays emerged, he concluded that the primary bow was caused by a single internal reflection inside the raindrop and that a secondary bow could be caused by two internal reflections. He supported this conclusion with a derivation of the law of refraction and correctly calculated the angles for both bows. This image has been enhanced.
Crédito:
Album / Science Source
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Tamaño imagen:
4838 x 3261 px | 45.1 MB
Tamaño impresión:
41.0 x 27.6 cm | 16.1 x 10.9 in (300 dpi)
Palabras clave:
ARCORIS ARTE CIENCIA ESPECTRO FÍSICA (CIENCIA) GEOMETRIA HISTORIA ILUSTRACION LUZ MAYOR OJO OJOS PAISAJE PAISAJES SIGLO XVII SONAR SOÑAR SUEÑO VISION VISUALES