It's typically called the "Wave-particle duality". And it's easily demonstrated, so
it's not "just a theory".
If you set up an experiment that will produce results from a wave but not from a
stream of particles, a beam of light produces results. So light behaves like a wave.
If you set up an experiment that will produce results from a stream of particles
but not from a wave, a beam of light produces results. So light behaves like a
stream of particles.
Whichever one you look for ... waves or particles ... light behaves that way.
So, next time someone asks you "Is light a wave or a stream of particles ?",
you can answer him confidently, knowing that your answer is the correct one.
The correct answer is "Yes ".
It was Max Planck who used the particle theory of light.
He proposed the wave-particle duality for the electrons.
Wave particle duality is almost ignored in everyday life mainly because the reactions involved especially with light is so miniscule that it only occurs in special situations and is hardly noticeable
Pierre Gassendi (1592-1655), an atomist, proposed a particle theory of light.
The speed of light is a number. It was a theory before it was measured. After it was measured, and the prediction was found to be correct, it was no longer a theory nor a hypothesis. It became a "physical constant".
wave theory of light
The wave-particle duality theory. This explains why sometimes light appears to travel as a wave, and why sometimes it appears to travel as a particle.
the significance of duality theory of linear programming
It was Max Planck who used the particle theory of light.
cartesian or duality of the mind/ body theory.
The Big Bang Theory - 2007 The Jerusalem Duality 1-12 is rated/received certificates of: Argentina:13 Netherlands:AL
He proposed the wave-particle duality for the electrons.
That means that light is both things: a particle and a wave.
M. Kafrawy has written: 'A geometrical proof for the duality theorem in linear programming' -- subject(s): Duality theory (Mathematics), Linear programming
It means that light has features of both waves and particles.
Ulrich Kohli has written: 'Technology, duality, and foreign trade' -- subject(s): Duality theory (Mathematics), Exports, Gross national product, Imports, International trade, Mathematical models, Production functions (Economic theory)
this is a much more complicated question than perhaps you realise. try looking up "wave particle duality" photons have the strange characteristic of haveing properties of both a wave and a particle.