The speed of light in vaccum, flint glass and crown glass is 3. 00×108m/s,1. 86×108m/sand1.Click to see full answer. Also question is, how does the speed of light in a substance such as glass compare to the speed of light in a vacuum?Light travels at approximately 300,000 kilometers per second in a vacuum, which has a refractive index of 1.0, but it slows down to 225,000 kilometers per second in water (refractive index of 1.3; see Figure 2) and 200,000 kilometers per second in glass (refractive index of 1.5).Secondly, what occurs as the light travels from alcohol into flint glass? The diagram shows a ray of monochromatic light incident on an alcohol-flint glass interface. What occurs as the light travels from alcohol into flint glass? A. The speed of the light decreases and the ray bends toward the normal. Moreover, what is the speed of light in zircon? 1.52×108 m/sWhat is the speed of light in ethanol?The speed of light in ethanol is 2.20 times 108 m/s what is the critical angle for total internal reflection?
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