Physics 103A Lab D - lab D:Linear Expansion coefficient INTRODUCTION Linear dimensions(e.g length diameter for most substances increase as the

Physics 103A Lab D - lab D:Linear Expansion coefficient...

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lab D :Linear Expansion coefficient INTRODUCTION Linear dimensions (e.g. length, diameter) for most substances increase as the temperature increases in a range that does not produce a change of phase. The added heat increases the vibration kinetic energy of the atoms in the material, which in turn increases the distance between the atoms. To a first approximation, the increase in a linear dimension L 0 L/L 0 = ⍺ T where the proportionality is called the coefficient of linear expansion. This coefficient depends on many factors, such as the composition and purity of the material, temperature, etc. Objective: The main objective of this lab was to measure the coefficient of linear expansion for different metal rods. THEORY: In the lab the following equation was used to calculate the coefficient of linear expansion. EXPERIMENTAL PROCEDURE: 1. Measure the initial length ( ) of the experimental rod to the nearest and the material of the rod.
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