A billiard or pool player or a bowler better than most people can get an understanding of an important physical observation, reported last week by Sir Chandrasekhara Venkata Raman, great Indian physicist. Sir Chandrasekhara was scientifically succinct in his announcement. Very few details reached Europe or the Americas. But, according to what he has done in the past and according to the corroborative work of other students, this, simply, is what he said.
Light is a stream of particles, which may be called quanta or photons. Each...
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