Light of 600 nm is reflected from a thin film of air between two glass plates. The
Question:
Light of 600 nm is reflected from a thin film of air between two glass plates. The thickness of the film is 1.5μm (1500 nm).
a. How much farther does the light reflected from the bottom surface of the film travel than that reflected from the top surface?
b. How many wavelengths of light does this represent?
Step by Step Answer:
Thickness of the film is t 15m Convert 15m for m to m t 15m10 6 m1m 15x10 ...View the full answer
Physics of Everyday Phenomena A conceptual Introduction to physics
ISBN: 978-0073512112
6th edition
Authors: W. Thomas Griffith, Juliet W. Brosing
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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