| A | B |
|---|
| lens | transparent material that refracts (bends) light =center of a mirror |
| focal length | distance between the center of the mirror (lens) and the focul point |
| virtual image | image formed by a mirror (lens) where the light rays don't meet together (converge) |
| reflecting telescope | It uses plane and concave mirrors to gather light from distance objects. The image formed is small. |
| refracting telescope | It uses lenses to focus and magnify light from far away objects. The larger the lenses, the greater the light-gathering power. |
| converge | to meet in a point or line |
| angle of incidence | angle formed by the incident ray and a line perpendicular to the barrier (normal) |
| angle of reflection | angle formed bya line perpendicular to the barrier and the reflected ray |
| normal | line perpendicular to the barrier |
| focal point | point in front of a mirror where the reflected rays meet |
| real image | image formed by a mirror (lensO that is the result of the actual converging (meet together) of light |
| incident ray | light ray that passes from air into a different material (eg. water..) |
