Thermodynamics formula sheet

34 rows · 5 sections · PhysRef · sample of the first 6 rows

Thermodynamics formula sheet. Every thermodynamics equation in PhysRef on one sheet — 34 formulas across 5 topics, each with its equation set in real maths, a symbol key and the SI unit of every symbol.
Quantity	Equation	Symbols	SI units
Heat & Temperature
Heat Capacity	$Q = mc\Delta T$	Q = heat · m = mass · c = specific heat · ΔT = temperature change	Q: kg·m²/s² · m: kg · c: m²/(s²·K) · ΔT: K
Latent Heat	$Q = mL$	Q = heat · m = mass · L = latent heat	Q: kg·m²/s² · m: kg · L: m²/s²
Linear Thermal Expansion	$\Delta L = \alpha L_0 \Delta T$	ΔL = change in length · α = expansion coefficient · L₀ = original length · ΔT = temperature change	ΔL: m · α: 1/K · L₀: m · ΔT: K
Volume Thermal Expansion	$\Delta V = \beta V_0 \Delta T$	ΔV = change in volume · β = volume expansion coeff · V₀ = original volume · ΔT = temperature change	ΔV: m³ · β: 1/K · V₀: m³ · ΔT: K
Heat Conduction	$P = \frac{kA\Delta T}{L}$	P = heat flow rate · k = thermal conductivity · A = cross-sectional area · ΔT = temperature difference · L = length	P: kg·m²/s³ · k: kg·m/(s³·K) · A: m² · ΔT: K · L: m
Stefan-Boltzmann Law	$P = \epsilon\sigma AT^4$	P = radiated power · ε = emissivity · σ = stefan-boltzmann constant · A = surface area · T = temperature	P: kg·m²/s³ · ε: dimensionless · σ: kg/(s³·K⁴) · A: m² · T: K

Built from the 34 thermodynamics entries in the PhysRef reference, grouped by the topics that category page uses. Every equation here is free to read on its own page at /formulas.

Every row on this sheet is also free on its own page — browse the Thermodynamics formulas. Premium pays for the sheet, not the physics.