what is difference between spectrum and dispersion and deviation..
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DISPERSION
In optics, dispersion is the phenomenon that the phase velocity of a wave depends on its frequency.[1] In a prism, dispersion causes the spatial separation of a white light into spectral components of different wavelengths. Dispersion is most often described in light waves, but it may happen to any kind of wave that interacts with a medium or can be confined to a waveguide, such as sound waves. Dispersion is sometimes called chromatic dispersion to emphasize its wavelength-dependent nature.
There are generally two sources of dispersion: material dispersion and waveguide dispersion. Material dispersion comes from a frequency-dependent response of a material to waves. For example, material dispersion leads to undesired chromatic aberration in a lens or the separation of colors in a prism. Waveguide dispersion occurs when the speed of a wave in a waveguide (such as an optical fiber) depends on its frequency for geometric reasons, independent of any frequency dependence of the materials from which it is constructed. This type of dispersion leads to signal degradation in telecommunications because the varying delay in arrival time between different components of a signal "smears out" the signal in time.
DEVIATION
A deviation is a difference or the (real or metaphorical) route followed by a different choice.
Deviation can refer to:
Deviation (statistics), the difference between the value of an observation and the mean of the population in mathematics and statistics.
Standard deviation, which is based on the square of the difference.
Absolute deviation, where the absolute value of the difference is used.
Frequency deviation, the maximum allowed "distance" in FM radio from the nominal frequency a station broadcasts at.
SPECTRUM
When white light passes through a prism, it spreads out into a band of seven colours,VIBGYOR. This band of colours obtained is called spectrum.
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In optics, dispersion is the phenomenon that the phase velocity of a wave depends on its frequency.[1] In a prism, dispersion causes the spatial separation of a white light into spectral components of different wavelengths. Dispersion is most often described in light waves, but it may happen to any kind of wave that interacts with a medium or can be confined to a waveguide, such as sound waves. Dispersion is sometimes called chromatic dispersion to emphasize its wavelength-dependent nature.
There are generally two sources of dispersion: material dispersion and waveguide dispersion. Material dispersion comes from a frequency-dependent response of a material to waves. For example, material dispersion leads to undesired chromatic aberration in a lens or the separation of colors in a prism. Waveguide dispersion occurs when the speed of a wave in a waveguide (such as an optical fiber) depends on its frequency for geometric reasons, independent of any frequency dependence of the materials from which it is constructed. This type of dispersion leads to signal degradation in telecommunications because the varying delay in arrival time between different components of a signal "smears out" the signal in time.
DEVIATION
A deviation is a difference or the (real or metaphorical) route followed by a different choice.
Deviation can refer to:
Deviation (statistics), the difference between the value of an observation and the mean of the population in mathematics and statistics.
Standard deviation, which is based on the square of the difference.
Absolute deviation, where the absolute value of the difference is used.
Frequency deviation, the maximum allowed "distance" in FM radio from the nominal frequency a station broadcasts at.
SPECTRUM
When white light passes through a prism, it spreads out into a band of seven colours,VIBGYOR. This band of colours obtained is called spectrum.
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●Spectrum-(plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism.
●Dispersion- 'Dispersion' is the property by which light is spread out according to its color as it passes through an object. For example, when you shine a white light into a , all of the different colors of light are bent different amounts, so they spread out and make a rainbow.
●Deviation-The angle equal to the difference between the angle of incidence and the angle of refraction of a ray of light passing through the surface between one medium and another of different refractive index.
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●Dispersion- 'Dispersion' is the property by which light is spread out according to its color as it passes through an object. For example, when you shine a white light into a , all of the different colors of light are bent different amounts, so they spread out and make a rainbow.
●Deviation-The angle equal to the difference between the angle of incidence and the angle of refraction of a ray of light passing through the surface between one medium and another of different refractive index.
Hope it helps....
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