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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 L0L/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.