PHYSICS 7E Lecture Notes - Lecture 17: Electric Field, Phenylalanine
PHYSICS 7E - Lecture 17 - The Nature of Light
*Images from University Physics, Young & Freedman
Visible Spectrum and Dispersion
●The index of refraction of many transparent
materials, such as glass and water, varies
slightly with wavelength
●This is how prisms and water droplets create
rainbows from sunlight
Physics of Rainbows
●Water droplets split light by color and the
strongest reflection is away from the0 24 °− 4 °
original ray
Double Rainbows
●A secondary rainbow is formed by rays that
undergo two refractions and two internal
reflections
●The angle is larger for violet light than for redΔ
●A primary rainbow is formed by rays that undergo two refractions and one internal
reflection
●The angle is larger for red light than for violetΔ
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PHYSICS 7E Full Course Notes
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Document Summary
Physics 7e - lecture 17 - the nature of light. The index of refraction of many transparent materials, such as glass and water, varies slightly with wavelength. This is how prisms and water droplets create rainbows from sunlight. Water droplets split light by color and the strongest reflection is original ray. 4 4 away from the. A secondary rainbow is formed by rays that undergo two refractions and two internal reflections. The angle is larger for violet light than for red. A primary rainbow is formed by rays that undergo two refractions and one internal reflection. The angle is larger for red light than for violet. An electromagnetic wave is linearly polarized if the electric field has only one component. Figure shows the effect of a polaroid polarizing filter. Figure below shows a polarizer and an analyzer. When light is reflected at the polarizing angle. The refractive index of a certain glass is 1. 66.
