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Example \(\PageIndex{1}\): Speed of Light in Matter. Calculate the speed of light in zircon, a material used in jewelry to imitate diamond. Strategy: The speed of light in a material, \(v\), can be calculated from the index of refraction \(n\) of the material using the equation \(n = c/v\). Solution
2 ημέρες πριν · Question: The absolute refractive index of diamond is \(2.42\). What is the speed of light in diamond? (Take speed of light in vacuum= \(3 \times 10^8 m/s\)
The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour).
In diamond, with a rather high refractive index of 2.4, the speed of light is reduced to a relative crawl (125,000 kilometers per second), being about 60 percent less than its maximum speed in a vacuum.
🔎 You can check how the speed of light can change in different media in the wave velocity calculator. You can find some of the values of n_1 n1 and n_2 n2 for common media in the index of refraction calculator. Generally, Snell's law of refraction is only valid for isotropic media.
The index of refraction calculator will allow you to calculate the refractive index of any medium. It is also a valuable tool for determining the speed of light in any translucent material. Continue reading to discover the index of refraction formula and learn how to find the index of refraction.
Example \(\PageIndex{1}\): Speed of Light in Jewelry. Calculate the speed of light in zircon, a material used in jewelry to imitate diamond. Strategy. We can calculate the speed of light in a material \(v\) from the index of refraction \(n\) of the material, using Equation \red{index}
