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Optics

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15 Apr 2008 17:46:47 IST

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about light n its basic nature?

None

what exactly is light in a practical thinkin. how can we see objects ? how can they emit colours.y does it look blank when we close our eyes withsome white sparklin substances sometimes.is there anythin special about our eyes. how can u explain the ability to see 2dor 3d pictures with our eyes.? even though it light has wave nature how exactly its wave nature explains all its properties?

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Amar Swamy

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Joined: 21 Mar 2008

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17 Apr 2008 09:20:31 IST

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light is an electromagnetic wave composed of the seven major colours on the spectrum having diffetent wavelengths and frequencies.

light shows a dual nature some of the properties of the light can be explained on the basis of the particle nature of light and some on the basis of the wave nature.

we can see objects when the light falling on them is reflected back to our eyes and falls on our retina.Eye is an optical instrument in the human body

It shows the things as it is

The phenomenon such as Photoelectric effect and Copmtons effect cannot be explained even by the wave theory of light but were sucessfully explined on the basis of quantum theory

Amar Swamy

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17 Apr 2008 09:27:15 IST

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The phenomenon such as Photoelectric effect and Comptons effect cannot be explained even by the wave theory of light but were sucessfully explined on the basis of quantum theory

we r able to see the things only when the light falling on the objects get reflected from the objects and falls on the retina of our eye.

our eye is an optical instrument which has the proper ty of showing the things as it is.

objects never emit colours they emit photons (photoelectric effect) when light rays fall on them. The frequency of the photon that matches with the frequency of the colour on the spectrum is said to be emitted by it. E=h v

Amar Swamy

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17 Apr 2008 09:28:01 IST

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plz rate if help[ful

radha

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Joined: 9 Feb 2008

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17 Apr 2008 20:09:05 IST

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thank u it was useful

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