Question

1.what is the wave-like thing that exist in association with a moving particle and that governs its properties

Answer 1

Both a wave and a particle description of light are possible. The dual character of light has been highlighted in particular by two investigations.

What is made up of  Light?

Photons are electromagnetic field bundles that contain a set amount of energy and are the building blocks of light. Photons can be counted or even individually measured with sensitive enough studies.

Both a particle and a wave can be used to describe light. The dual nature of light has been demonstrated through two tests in particular. The particles we refer to as "photons" when imagining light as being composed of them are small. A certain quantity of energy is carried by each photon, which has no mass.

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