what is light?

Answer 1

Light is the thought of the Universe.

Answer 2

. Light is electromagnetic radiation, which tells you nothing but another name for light. Light is particles called photons, which are very tiny. These particles can be created when electrons which are parts of atoms lose energy by falling to a lower energy state. Photons can also be created by other reactions in the subatomic world.
. Now, it gets weird. Light is also a wave. Some experiments which are done to observe the wave related properties of light produce things like "interference patterns" which have to do with waves reinforcing each other or canceling each other out. They can be recorded on photo paper, and look like ripples. You can see how they might be created by the interference between photon particles if you let use a stream of light in the experiment. But, they also show up on the photograph, even if you carefully allow only one photon into the test equipment. You get wave like effects using only one particle at a time.
. But other experiments, which are designed to examine particle like properties always get results which indicate that light is made of particles.
. So, light is always particles (photons) and it is always, at the same time, waves.

Answer 3

Light is generally regarded as the visible part of the electromagnetic spectrum with wavelengths between 400 nm and 700 nm. EM waves are oscillating fields of electromagnetic attraction and repulsion. The waves can also behave like a particle called a photon in quantum machanics. Photons have no mass and travel at 299 792 458 m/s in a vacuum.

Answer 4

Light is considered to be photon, one of the quanta. An elementary particle such as electron, proton and neutron is also a quantum.

What is the quantum? It's hard to explain. It's considered to be kind of wave. You might learn at school that an electron is a particle. But it's not true. Light and electron are quanta. they are something like wave, although they behave as if they are particles in some cases. We humans can't explain exactly what the quantum is. Still studying.

If you want to more about it, learn "Quantum theory".

Answer 5

Light is electromagnetic radiation, otherwise can be said as propagated energy in different speeds, frequencies, and different colour outputs. Since all materials in the world are surrounded by electrons, light spectrum of different wavelengths and frequencies are taken upon different quantas known as photons, there is basically infinitely large and small quantas of light that exist in nature, some are visible the others not. And electrons after absorbing photons release them in a diffrent fashion that is measured in terms of the different output colours.

Answer 6

There is a scientific debate as to whether light has a particle or wave nature. It does display both. The particle is called a photon, the smallest piece of light. The waves are the electromagnetic spectrum. We can see the visible part.

Answer 7

a movement of photons. The particles with is theorized to be components of light. Your question is a bit vague though. Light rocks!

Answer 8

Visible light is the part of the electromagnetic spectrum that our eyes are adapted to so we can see - it is the same as microwaves, radio, gamma and X rays, they just have different amounts of energy than visible light.

Answer 9

Your theme of issue is light.

Answer 10

Energy of the visable type