Sections of the following in RED talk about demonstrations done in class and will not make much sense if you were not in class. All light waves move at the speed of light .
Light waves carry energy .
Imagine standing at the beach, being hit by ocean waves. When waves hit you, they transfer energy to you. More energy when waves are close together. When a light wave enters our eyes, it reacts with the retina cells. The amount of energy carried can cause different reactions.