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1. Does light always travel at the same speed? Explain. 2. What name is given to the...

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1. Does light always travel at the same speed? Explain.
2. What name is given to the entire range of waves that are similar to visible light?
3. Who proposed the particle theory of light?
4. Who developed the wave packet theory of light?
5. Who made the first estimate of the speed of light?
6. How was the first estimate of the speed of light made?
7. What are the units of luminous intensity?
8. In your own words, explain luminous intensity.

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1 It always travels at the same velocity in a vacuum it has a different velocity ...View the full answer


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Related Book For  book-img-for-question
Applied Physics

Applied Physics

ISBN: 978-0132109277

10th Edition

Authors: Dale ewen, Neill schurter, P. erik gundersen

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Related Video

Using a few basic physics principles, you can impress your friends with a trick that makes a bottle disappear. For this experiment, you will need a mini plastic bottle, glycerin, a glass, and a funnel. First, open the bottle and pour some glycerin into it, then close the bottle tightly. Next, pour some water into the glass using a funnel. Place the mini bottle into the glass of water and it will look normal. This is because light travels through air faster than it travels through the glass and water, allowing our eyes to see the bottle inside the glass. However, when you fill the mini bottle with more glycerin, and pour glycerin into the glass, then put the glycerin filled bottle into the glass with glycerin in it. Half of the bottle that is submerged in the glycerin will become invisible as the light travels through glass and glycerin at the same speed, thus it does not bend and no refraction takes place, making the bottle invisible. This happens because both glass and glycerin have almost the same refractive index, which causes the speed of light to be the same in both mediums, causing no bending of light and making the bottle disappear.

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