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Thermal Physics

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4 Sep 2010 13:44:07 IST

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dual property of wave length

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dual property of wave length

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Vikram Saxena

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28 Jan 2011 17:27:31 IST

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Four primary properties of light are intensity, frequency or wavelength, polarization, and phase Light, which exists in tiny "packets" called photos, exhibits properties of both waves and particles. This property is referred to as the wave particle duality. The speed of light, although quite fast, is not infinite. The speed of light in a vacuum is expressed as c = 2.99 × 108 m/s. Light travels in a vacuum in a constant speed, and this speed is considered a universal constant. It is important to note that speed change for light traveling through no vacuum media such as air (0.03% slower) or glass (30.0% slower). For most purposes, we may represent light in terms of magnitude and direction. In a vacuum, light will travel in a straight line in a fixed speed, carrying energy from one place to another. Two key properties of light interacting with a medium are:

1. It can be deflects upon passing from one medium to another (refraction).

2. It can be bounced off a surface (reflection).

The aspect of light interaction with media other than a vacuum will be addressed, which deal with geometrical and physical optics, respectively !!!!!

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