Linear Thermal Expansion Coefficient
Linear thermal expansion coefficient, abbreviated as \(\overrightarrow{\alpha_l}\) (Greek symbol alpha), also called coefficient of linear thermal expansion, is the ratio of the change in size of a material to its change in temperature.
Linear thermal expansion coefficient Formula |
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\(\large{ \overrightarrow{\alpha_l} = \frac{ l_f \;-\; l_i }{ l_i \; \left( T_f \;-\; T_i \right) } }\) | ||
Symbol | English | Metric |
\(\large{ \overrightarrow{\alpha_l} }\) (Greek symbol alpha) = linear thermal expansion coefficient | \(\large{ \frac{in}{in\;F} }\) | \(\large{ \frac{mm}{mm\;C} }\) |
\(\large{ l_f }\) = final length | \(\large{ft}\) | \(\large{m}\) |
\(\large{ l_i }\) = initial length | \(\large{ft}\) | \(\large{m}\) |
\(\large{ T_f }\) = final temperature | \(\large{F}\) | \(\large{C}\) |
\(\large{ T_i }\) = initial temperature | \(\large{F}\) | \(\large{C}\) |
Tags: Thermal Equations Coefficient Equations Expansion Equations