03 LAB D_ Linear Expansion Coefficient - Lab Course 103A-Section 006 Physics Laboratory Report Lab number and Title LAB D Linear Expansion Coefficient

03 LAB D_ Linear Expansion Coefficient - Lab Course...

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Lab Course 103A-Section 006 Physics Laboratory Report Lab number and Title: LAB D: Linear Expansion Coefficient Name: Kris Edquilag Group members: Ernessa Francois, Andrew Rivera Experiment Date : Feburary 10, 2017 Instructor’s name: Sizhan Liu 1. OBJECTIVES To measure the coefficient of linear expansion for different metal rods. 2. THEORETICAL BACKGROUND Linear dimensions (length and 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 vibrational kinetic energy of the atoms in the material, which increases the distance between the atoms. To the first approximation, the increase in a linear dimension ΔL is proportional to the increase in temperature ΔT and the initial dimension L o : ΔL/L = αΔT Where the proportionality α is the coefficient of linear expansion. This coefficient depends on many factors, such as the composition and purity of the material, temperature, etc.
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