biophysics important formulas

Phase Change & Calorimetry

Q = Heat energy in Joules or Cals
c = specific heat capacity in J/Kg * K or C (temp)

Phase Change & Calorimetry

Q = Heat energy in Joules or Cals
λ (lambda) = Latent heat in J/kg

Thermodynamics / Volumetric Energy Density

U (Pa) = volumetric energy density in J/m3 or N/m2
V = Volume in m3 or L
P = density in kg/m3

Fluid Mechanics / Capillary Force & Surface Tension

F = Force in N
σ (sigma) = surface tension in N/m or J/m2

n = dynamic viscocity in Pa * s or kg/(m*s)
n = molecular number density in m-3 or 1/m3

xi = 0.02m
P = optical power in D (diopters) or m-1 (1/m)

V = resting potential in mV or V
T = In this formula, ALWAYS KELVIN

D = Diffusion transport in m2/s

N = molecule count
NA = 6 × 10²³ mol^-1

Dimensional analysis

Newton N: kg m/s²
Joules Energy: N * m or kg * m² / s²
Pascal pressure (Pa): N/m² or kg/(m * s²)
n viscocity: Pa * s or kg/m * s

Q = flow rate in L/min or m3/s
A = Area of a cylinder as pi * r²

lamda: wavelength
F = frequency in hz

T = torque
F = newton N
d = distance

p = density
v = speed
L = length
n = viscocity