Sir Isaac Newton once wrote, in what must be one of ... because the less a lens is curved the less it acts like a prism. But this made the focal length of the objective lens—and thus the ...

Of his rainbow experiment Newton wrote that he had projected white light through a prism onto a wall and had a friend mark the boundaries between the colors, which Newton then named. In his diagrams, ...

One of its earlier practitioners was Sir Isaac Newton ... colours was that they were impurities added by the prism to the pure white light. Newton thought that the colours were already present ...