Question

What is time ?
What is light?
What is an atom?

Answer 1

Answer:

time answer is here

Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. ... Time in physics is operationally defined as "what a clock reads".

light answer is here

Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres, between the infrared and the ultraviolet.

atom answer is here

the smallest particle of a chemical element that can exists is called as atom

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Answer 2

1. Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future.... Time in physics is operationally defined as "what a clock reads".

2. Light is defined as the electromagnetic radiation with wavelengths between 380 and 750 nm which is visible to the human eye.

3. the smallest particle of a chemical element that can exist.

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