PLEASE HELP! I have 3 questions that need to be answered please help me) 1.) what's the definition of transitional light?

2.) what's the definition of Value contrast?

3.) what's the definition of light source?

The transition of light is a kind of molecular electronic transition, where electrons in a molecule are excited from one energy level to a higher energy level

2.) Value contrast refers to the amount of contrast between two areas of different value.

3) light source - any device serving as a source of illumination

Happy birthday:)

Dis the awnser because they are going from high to low