Questions tagged [light]

We know that a body is red because it absorbs (visible) light of all wavelengths except that for the red. But before Newton showed that white light was actually made up of seven colors how did people explain a body being red in color?

Laplace gave the theory of bodies so heavy that they would not let even light escape. This theory needs light to have a mass and hence is compatible with the corpuscular theory. So how did Laplace feel when the corpuscular theory was proved false by…

I am readying on Arago's experiment of 1810 in a book on the history of physics. The author writes that Arago conducted the experiment assuming that light consisted of particles and that faster light should have a lower refraction angle than slower…