corpuscular theory of light

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corpuscular theory of light

physics

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The corpuscular theory of light, prominent in the 17th century, proposed that light consists of tiny particles, or corpuscles, emitted from luminous bodies. Isaac Newton was a key proponent of this theory, using it to explain phenomena like refraction. He suggested that these particles had different masses for different colors, influencing their speed and angle of refraction in transparent materials.12

However, observations of interference and diffraction suggested light behaved as a wave. Experiments in the 19th century, particularly those measuring the speed of light in different media, provided strong evidence for the wave theory, leading to the decline of the corpuscular model for a time. The debate between particle and wave theories of light continued into the 20th century with the development of quantum mechanics.23

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Isaac Newton
Inaugural lectures at Trinity
…that light consists of material corpuscles in motion. The corpuscular conception of light was always a speculative theory on the periphery of his optics, however. The core of Newton’s contribution had to do with colors. An ancient theory extending back at least to Aristotle held that a certain class of…
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…that light consists of material corpuscles in motion. The corpuscular conception of light was always a speculative theory on the periphery of his optics, however. The core of Newton’s contribution had to do with colors. An ancient theory extending back at least to Aristotle held that a certain class of…
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electromagnetic radiation
Wave theory and corpuscular theory
A conceptual difficulty in Newtonian mechanics, however, is the way in which the gravitational force between two massive objects acts over a distance across empty space. Newton did not address this question, but many of his contemporaries hypothesized that the gravitational force was mediated through an invisible and frictionless…
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A conceptual difficulty in Newtonian mechanics, however, is the way in which the gravitational force between two massive objects acts over a distance across empty space. Newton did not address this question, but many of his contemporaries hypothesized that the gravitational force was mediated through an invisible and frictionless…
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atomism
The existence of the void
…the phenomena of light, the corpuscular and hence atomic theory of Newton, which held that light is made of tiny particles, was adopted almost universally, in spite of Huygens’s brilliant development of the wave hypothesis.
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…the phenomena of light, the corpuscular and hence atomic theory of Newton, which held that light is made of tiny particles, was adopted almost universally, in spite of Huygens’s brilliant development of the wave hypothesis.
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physical science
Optics
…Euler also rejected Newton’s essentially corpuscular theory of the nature of light by explaining optical phenomena in terms of vibrations in a fluid ether. The dominance of Newton’s theory throughout the 18th century was due partly to its successful direct application by Newton and his followers and partly to the…
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…Euler also rejected Newton’s essentially corpuscular theory of the nature of light by explaining optical phenomena in terms of vibrations in a fluid ether. The dominance of Newton’s theory throughout the 18th century was due partly to its successful direct application by Newton and his followers and partly to the…
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principles of physical science
Qualitative tests to distinguish alternative theories
…physicists were adherents of Newton’s corpuscular theory. It was pointed out by Siméon-Denis Poisson, as a fatal objection, that Fresnel’s theory predicted a bright spot at the very centre of the shadow cast by a circular obstacle. When this was in fact observed by François Arago, Fresnel’s theory was immediately…
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…physicists were adherents of Newton’s corpuscular theory. It was pointed out by Siméon-Denis Poisson, as a fatal objection, that Fresnel’s theory predicted a bright spot at the very centre of the shadow cast by a circular obstacle. When this was in fact observed by François Arago, Fresnel’s theory was immediately…
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