the light from the glowing marbles were passed
Question # 00276246
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Updated on: 05/07/2016 11:46 AM Due on: 06/06/2016
- Fluorescence And Polarization
- watch: https://youtu.be/_8rgmkbvojc
- In this video, you will first see a demonstration of fluorescence, using tubes of fluorescent liquid, and glass marbles containing Uranium. This is followed by a demonstration of how two linearly polarized sheets of plastic can function at various orientations. When aligned so that the molecules of the plastic sheets are in the same direction, about half of the light is blocked because of the tint of the plastic sheets. Hoever, when the sheets are at 90 degree angles from one another, they block just about all of the light.After viewing the demonstrations, please answer the following questions.
- Things To Do
- 1. If the light from the glowing marbles were passed through a spectroscope, you would see only a single emission line of that green color. What does that mean in terms of the transitions the electrons make?2. A pair of polarized sun glasses, use single direction polarized sheets of material. What advantage do polarized glasses have over just tinted sun glasses?
- 3. Look at the plastic tape dispenser at this url:http://people.rit.edu/andpph/photofile-sci/polarization-7360.jpg The dispenser is photographed between two sheets of polarized materials. What do the colors reveal?
- The Doppler EffectThe Doppler Effect
- watch: https://www.youtube.com/watch?v=NG_AiGFA7cg
- This video demonstrates the effect first described by Hans Christian Doppler. You will hear approaching trains blowing their horns. Notice what happens to the pitch or frequency of the sound as the engine of the train passes by. (You only need to hear the first two trains in order to experience the effect.) After viewing the video, taken near Marshall, Texas, please answer the following questions.
- Things To Do
- 1. Describe what you heard as the engines went by.
- 2. In terms of the two frequencies you heard, what frequency do you think, would be heard, if the train were standing still?3. What would you hear as the train is approaching, if it were travelling faster than the speed of sound?
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Rating:
/5
Solution: the light from the glowing marbles were passed