What is dispersion without deviation ? find its condition and calculate total dispersion .
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Deviation without Dispersion. This mean an achromatic combination of two prisms in which net or resultant dispersion is zero and deviation is produced
As angle of deviation depends upon the prism material, we are in a position to put together prisms of different materials in such a way that the net outcome is such that while dispersion remains, deviations get cancelled out.
This can be done when deviation (d1) produced by first prism is equal and opposite to the deviation (d2) produced by the second prism.
As angle of deviation depends upon the prism material, we are in a position to put together prisms of different materials in such a way that the net outcome is such that while dispersion remains, deviations get cancelled out.
This can be done when deviation (d1) produced by first prism is equal and opposite to the deviation (d2) produced by the second prism.
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