Vapor, fluid (liquids), solid state

Relative air humidity
φ = p / p_0
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Relative air humidity
φ = ρ / ρ_0
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Liquid surface tension force
F = σ l
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Additional pressure in the surface of a curved fluid (Young–Laplace formula)
Δ_p = 2σ / R
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Capillary rise (descent)
h = 2σ / (ρgr)
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Tension
σ = F / S
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Hooke's law (tension)
σ = Eε
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Hooke's law (tension)
σ = E Δ_l / l_0
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Elongation
ε = Δ_l / l_0
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Temperature coefficient of linear expansion (solid body)
α = Δ_l / (l_1 * Δ_t)
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Heat (thermal) surface expansion of solid body
Δ_S = 2α * S_1 * Δ_t
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Heat (thermal) surface expansion of solid body
S_2 =   S_1 (1+2α* Δ_t)
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Heat (thermal) volume expansion of solid body
V_2 = V_1 (1 + 3α * Δ_t)
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Heat (thermal) volume expansion of liquid (fluid)
Δ_V = β * V_1 * Δ_t
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Heat (thermal) volume expansion of liquid (fluid)
V_2 = V_1 (1 + β  * Δ_t)
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