| A | B |
|---|
| James Clerk Maxwell | Discovered the speed of light |
| Ultraviolet | Portion of E&M spectrum above the visible (in frerquency) |
| Infrared | Portion of E&M specrum below the visible (in frerquency) |
| Wavelength | Inversely proportional to frequency |
| Transparent | Earth's atmosphere, for example |
| Solar Eclipse | Shadow of the Moon falls on the Earth |
| Lunar eclipse | Moon passesinto the the shadow of the Earth |
| Umbra | Total shadow |
| Penumbra | Partial shadow |
| Cones in the eye | Make color vision possible |
| Rods in the eye | Make non-color vision possible |
| Additive primary colors | Red, green and blue |
| Complementary colors | Added together produce white light |
| Subtractive primary colors | Magneta, cyan and yellow |
