Redshift (based on wavelength)
Darcy friction factor - Goudar–Sonnad equation
FEV1/FVC ratio (FEV1%)
Shockley diode equation (in real transistors)
Dry unit weight
Freefall in Uniform Gravitational Field with Air Resistance (velocity)
1st medians' theorem - Apollonius' theorem
AC Power
Rayleigh Number
Critical buckling stress of a column