Light refracted by a semi-circular block

Light refracted by a semi-circular block

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Refracting a light from a raybox through a semi-circular block. When the angle of the ray is moved from 0 through to 80 degrees enough values will be created to plot a graph of sin01 against sin02. To obtain values for 02 for each corresponding value of 01, the glass block must be removed each time and a line drawn between the point at which it enters the block to the point where the refracted ray leaves the block. Here the ray enters at 50 degrees and exits at roughly 30 degrees.

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Keywords: angle of incidence, angle of refraction, bend, educational, emergent ray, equipment, glass block, incident ray, laboratory, light, light ray, optical, physics, raybox, refracted, refracted ray, refracting, refraction, school science, science education, semi-circular, slit

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