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[Stanley Huang]

Newton supported the idea that light is a particle, while Huygens believed that light travels like a wave.

Both, the German poet Goethe and the German mathematician Leibniz supported Huygens’ belief in light rather than Newton’s.

And not only Leibniz opposed Newton’s belief in light; Leibniz even opposed Newton’s faith in space and time.

But because Newton carried out experiments, while Leibniz did not perform experiment, so during that time, Leibniz’s idea of space or time was not widely read.

But is light a particle or is it a wave?

Light travels like a wave if light is subjected to external force, but if there is no external force, light travels like a particle, that will move forever because of inertia.

So inertia does apply to how light travels, so to me, force equals mass times acceleration will apply to light without exception.

But to me, light does not have double personalities.

To me, light is a particle, and even when light is subjected to external force, it is still a particle when it travels like a wave.

What this is is that light, when subjected to external force, will flow like a wave, but the light wave is still made up of particles. So even though light travels like a wave when subjected to external force, still, the light wave is still made up of particles and so light is always a particle even if it travels like a wave.

So, I do not believe light has double personalities.

Do you agree?

[Eckhart Aurelius Hughes]

Quantum Mechanics has been confirmed through experiment. It shows that light -- and even matter like buckyballs -- behave like a wave (or a wave of particles due to apparent superposition) until measured in which case they behave like a particle. What exactly causes the wavefunction collapse is open to interpretation, but any such interpretation has a lot of mathematical truths and confirmed science to which to conform.

[Stanley Huang]

Different experimental observations may have different results. Just like the observation of the very large is different to the observation of the very small. And Newton's observation might be different to the observation of quantum scientists. But to me, light is a particle even when it travels like a wave.

And not all quantum scientists have the same feelings, because some scientists say that light is both particle and a wave, while others say that it is neither wave nor particle, if you read 'wikipedia.'