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Invar (a special iron - nickel alloy) is used in pendulam instead of aluminium ,in order to decrease the expansivity.

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Q: What are the applications of linear expansion?
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What are the main applications of linear expansion?

Main applications of linear expansion include designing bridges, railways, and roads to account for temperature changes, ensuring accurate measurements in precision instruments by calibrating for temperature variations, and in the production of materials like concrete to prevent cracking due to temperature changes.


What are the two types of thermal expansion?

Linear expansion and volumetric expansion are the two types of thermal expansion. Linear expansion is the increase in length of a material when heated, while volumetric expansion refers to the increase in volume of a material when heated.


What is linear expansion?

If a body is heated and after heating the body if the expand in one dimension then it is called linear expansion


What is the coefficient of linear expansion of mercury?

The coefficient of linear expansion of mercury is 0.000181 per degree Celsius.


What is the relationship of coefficient linear expansion to actual expansion?

The coefficient of linear expansion is a constant value that quantifies how much a material expands per degree Celsius increase in temperature. The actual expansion of an object can be calculated by multiplying the coefficient of linear expansion by the original length of the object and the temperature change.


Does the coefficient of linear expansion depends upon length?

yes,according to relation coefficient of linear expansion depends upon original length.


Does the linear programming approach apply the same way in different applications?

Linear programming approach does not apply the same way in different applications. In some advanced applications, the equations used for linear programming are quite complex.


Linear expansion apparatus?

A linear expansion apparatus is used to measure the change in length of a material in response to a change in temperature. It typically consists of a sample material mounted between two supports, with a mechanism to control the temperature. By measuring the change in length as the temperature changes, the coefficient of linear expansion of the material can be determined.


What is the cubical coefficient of thermal expansion for metals?

Since most metals are isotropic, the cubical coefficient of expansion is three times the linear coefficient of expansion. The linear coefficient of expansion is obtained from measurement and tables for the specific material which are readily available.


Does coefficient of linear expansion depend on length?

No, the coefficient of linear expansion does not depend on the initial length of the material. It is a material property that remains constant regardless of the length.


As the temperature increases materials with large coefficients of linear expansion increase a lot in size while materials with small coefficients of linear expansion increase a in size?

Large


What is the relation between the coefficient of linear and superficial and volume expansion respectively?

The coefficient of linear expansion (α) is one-third of the coefficient of superficial expansion (β), and the coefficient of superficial expansion is one-third of the coefficient of volume expansion (γ). This relationship follows from the dimensional analysis of the expansion coefficients in the respective directions.