| A | B |
|---|
| incident ray | light ray going towards mirror |
| reflecting ray | light ray bouncing off mirror |
| angle | corner/amount direction changes |
| cornea | transparent; covers iris and pupil |
| iris | opens and closes the pupil |
| pupil | lets light into the eye |
| lens | focuses light onto retina |
| retina | detects light (cells absorb light) |
| optic nerve | sends info from retina to brain |
| mirror | a surface that reflects light |
| object | anything made of atoms |
| nanometre | 1/1000000000 of a metre |
| kilometre | 1000 time a metre |
| metre | international unit for distance |
| wave | regular movement up and down |
| medium | what type of substance e.g. air |
| refraction | bending inside different substance |
| media | plural of medium |
| colours | different wavelengths of light |
| amplitude | wave height (above resting line) |
