Linear expansion of solid :
Coefficient of linear expansion (α) = L_t-L_o\over L_ot[\katex]
or Lt = L0 (1 + αt)
Relation among the coefficients of expansion of solid :
ɑ = β/2 = γ/3
or, β = 2ɑ and γ = 3ɑ
Expansion of liquid :
For a liquid kept in a container, γr = γa + γg
γr = Real Expansion
γa = Apparent Expansion
γg = Gas Expansion
Thermal conductivity :
The quantity of heat Q conducted through a solid bar,
Q = k.A.({θ_2 - θ_1})t\over L [\katex] where k is the thermal conductivity.
Thermal Resistance :
Rth = {1\over k} \times {L\over A}[\katex]
