SCEN101 Lecture Notes - Lecture 16: Electromagnetic Spectrum, Plane Mirror, Inverse Relation
1 Nov 2017
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Document Summary
The electromagnetic spectrum spans waves ranging from lowest to highest frequencies. The smallest portion of the electromagnetic spectrum is that of . 340 m/s = speed of sound in air. 300,000,000 m/s = speed of light in air (3x108) Colored glass is opaque to much of incident white light. Wavelength of ultraviolet is closer to the vibration of the atoms, and they absorb and keep the ultraviolet. Light incident on matter forces some electrons in matter to vibrate. If n = 1, light is in vacuum. Strictly speaking, the photons of light incident on glass are . Not the ones that travel through and exit the other side. The returning of a wave to the medium through which it came when encountering a reflective surface. As far behind the mirror as the object is in front of the mirror. Real formed by the actual intersection of rays of light.
