Options:
+ sensory neurons.
+ Your sensory system picks it up.
+ sound energy.
+ an electron microscope.
+ electromagnetic energy.
+ vibrations.
+ Electrical energy.
+ heat waves.

Fact 1: When light enters the eye through the pupil , that light falls on the retina. Fact 2: Light is the visible form of electromagnetic energy. Given the two facts above, what goes to the retina upon entering the eye?
Answer:
electromagnetic energy