Refraction is the changing of wave speeds due to changes in mediums. Today, we did many demos and worksheet problems to learn how these certain refractions look in real life. The index of refraction is represented with the letter n. n = c/v, which is the speed of light in a vacuum (3 x 10 ^8 m/s), divided by the speed of light in the medium. Some indexes of refractions we learned, are air (1), water (1.33), glass (1.5) and diamonds (2.42). If we put this in the c/v = n equation, you can get each speed of light in the medium.
Refraction is dependent on the medium, where if there is change in 2 media, bending will occur. Snell's law is an equation that can be applied to refraction. With this equation, we can find the angle or the index of refraction. The critical angle happens when there is change in media. All critical angles are relative to the normal.
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