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ch. 27 notes
Question | Answer |
---|---|
what are sources of light ? | sun, lamp filament , candle , glowing gases |
what materials are transparent? | glass, air, water |
what materials are opaque? | wood, metal |
what materials are transluscent? | thin paper, frosted glass |
what do scienctists now agree on light? | that light has a dual nature, part wave and part particle |
what was enestiens theory ? | light consists as particles , photons that move as waves |
what is the speed of light ? | 300,000 km/s |
michelson recieved a noble prize in physics for what? | for using a spinning mirror apparatus and found the same value for light |
how long does it take the light from the sun to reach the earth? | 8 minutes |