Optics---very interesting

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Optics---very interesting

Post  ngocthiem3g.GK on Sun Apr 13, 2008 2:48 am

Optics ( appearance or look in Ancient Greek) is a branch
of physics that describes the behavior and
properties of light and the interaction of light with matter.
Optics explains optical phenomena.

The field of optics usually describes the behavior of visible, infrared, and ultraviolet light; however because
light is an electromagnetic wave,
analogous phenomena occur in X-rays, microwaves, radio waves,
and other forms of electromagnetic
radiation
. Optics can thus be regarded as a sub-field of electromagnetism. Some optical
phenomena depend on the quantum nature of light relating some
areas of optics to quantum mechanics. In
practice, the vast majority of optical phenomena can be accounted for using the
electromagnetic description of light, as described by Maxwell's
Equations
.

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