Laser Light Bending

Laser Light Bending

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Caption: When light propagates in a transparent homogeneous medium, it travels along a straight line. Light path can be made to curve if the medium has its optical density (refractive index) changing gradually. In this photograph a diode laser beam (635 nm) propagates through a concentrated solution of sugar in water. The solution was left undisturbed for a while and became more dense at the bottom and gradually less dense toward the surface. This effect is responsible for formation of mirages on a hot day in a desert, except that in the case of a mirage the less dense (hotter) air is near the ground and becomes more dense (cooler) up from the ground.

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Keywords: 635 nm, bend, curve, cuvette, deflection, demo, demonstration, diode laser, diode laser beam, educational, effect, geometric, gradient, gradual, lab, laser, light, monochromatic light, optical, optical phenomenon, optics, physics, pink laser, propagation, propogating light, refract, refracted, refractive index, science, scientific, tank, water, wavelength

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