| A | B |
|---|
| light | A form of energy that travels in rays thru space |
| microwaves and infra-red waves | 2 kinds of LONG wavelengths of light that humans cannot see |
| X-rays or ultra-violet waves | SHORT wavelengths of light humans cannot see and produce sunburn |
| visible spectrum | Wavelengths seen by humans |
| spectrum | bands of colored light [rainbow] |
| crest | Top or peak of a wavelength |
| trough | Bottom of a wavelength |
| reflect | Bounce, like light from a mirror |
| red, orange, yellow, green, blue, indigo, violet, Roy G. Biv | Name the colors of the spectrum |
| refract | Bend light [by a lens, or like appearance of a fork in a glass of water] |
| transmit | To pass thru [like thru water, air, or glass] |
| absorb | To take in or hold on to [ we see the color that is held on to] |
| prism | Triangular solid that separates white light into the spectrum |
| lens | Used to bend [refract] light; glasses, microscopes, telescopes |
| concave lens | Lens that curves inward ) ( ; causes light to spread out |
| convex lens | Lens that curves outward ( ) ; focuses on a point, [eye glasses] |
| focus | Point where light collects or converges |
| microscope | Instrument to see small objects |
| telescope | Instrument used to view far away objects |
| transparent | clear; light passes thru completely |
| translucent | Cloudy; allows some light to pass thru |
| opaque | Does not allow light to pass thru |
| Sir Isaac Newton | Discovered Roy G Biv spectrum |
| Anton Von Leeuwenhoek | First person to see tiny animals in microscope |
| Galileo Galilei | Developed the telescope to look into space; thought Earth and moon revolve around the sun |
| Robert Hooke | Built refracting telescope; discovered plant cells under microscope |
| Thomas Edison | Invented light bulb |
| Lewis Latimer | Improved the lightbulb with a carbon filament |
| diffraction | Bending light as it passes thru a narrow opening or around an object |
| spectroscope | Instrument that separates white light into different color bands |
