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In surveying, it refers to the offset of the centre of the prism to the reflective section and the adjustment required to achieve an accurate reading.

Each variant of prisms has its own independent prism constant that must accounted for when taking readings.

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Q: What is meant by prism constant?
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What is the difference between ordinary prism and constant deviation prism?

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Why is the constant deviation spectrometer named so?

It is named after the type of prism used in the instrument. A constant deviation prism has the property that the angle between light entering the prism (the incident light) and light exiting the prism (the emergent light) is always the same, no matter what the angle of the incident light to the prism.


What is the difference between ordinary prism or constant deviation prism?

An ordinary prism disperses light based on varying angles of refraction, resulting in different colors being separated at different angles. A constant deviation prism disperses light in such a way that all colors are dispersed at a constant angle, maintaining a consistent level of separation irrespective of wavelength.


What is meant by joule's constant?

joules constant


What is Cauchy's constant of a prism?

A=1.621 ,B=8.8x10-15


What pirsim has triangular bases?

Assuming that pirsim is meant to be prism, the answer is that a triangular based prism has triangular bases!


What is meant by a triangular prism?

A triangular prism is one with two triangles as the bases and 3 corresponding parallelograms as faces. The triangular prism is also a prismatic uniform polyhedron.


What is one way that a triangular prism and a rectangular prism are similar?

They both have sides that are rectangular in shape. They both have a constant cross-sectional shape equal to the shape of the ends (triangle for a triangular prism; rectangle for a rectangular prism).


What is meant by dispersive power of prism?

the dispersive power of prism can be defined as the rate of change of angle of deviation in specific spectrum of light ..


What is the least amount of bases a prism can have?

A prism *always* has 2 bases. In case you meant "faces" instead of "bases", the prism with the smallest number of faces is the triangular prism - which has 5 faces. If there were any fewer number of faces, the prism which become a two dimensional object.


What is the numerical value of cauchy's constant A and B for the prism?

A=1.621 ,B=8.8x10-15