coefficient of linear expansion
Solution
The change in length per unit length resulting from a one degree rise in temperature, expressed in
degrees is defined as coefficient of linear expansion.
Most materials expand somewhat when heated through a temperature range that does not
produce a change in phase (that is changing from a solid to a liquid or from a liquid to a gas).
The added heat increases the average amplitude of vibration of the atoms in the material which
increases the average separation between the atoms. Suppose an object of length L undergoes a
temperature change of magnitude T. If T is reasonably small, the change in length, L, is
generally proportional to L and DT. Stated mathematically
L =LT,
where is the coefficient of linear expansion..
Higher the value, higher will be expansion with temperature.
coefficient of linear expansionSolutionThe change in length .pdf
1. coefficient of linear expansion
Solution
The change in length per unit length resulting from a one degree rise in temperature, expressed in
degrees is defined as coefficient of linear expansion.
Most materials expand somewhat when heated through a temperature range that does not
produce a change in phase (that is changing from a solid to a liquid or from a liquid to a gas).
The added heat increases the average amplitude of vibration of the atoms in the material which
increases the average separation between the atoms. Suppose an object of length L undergoes a
temperature change of magnitude T. If T is reasonably small, the change in length, L, is
generally proportional to L and DT. Stated mathematically
L =LT,
where is the coefficient of linear expansion..
Higher the value, higher will be expansion with temperature
