Sum of natural numbers raised to the fourth power
Fourier Number (mass)
Radius of circumscribed sphere of a cube
Sum of consecutive (triangular) cubes (Nicomachus's theorem)
Modulus of resilience
Malus' law (polarized light)
Product of the diagonals in a convex quadrilateral(Bretschneider's formula for diagonals)
Pearson's moment coefficient of skewness
Time to reach specific temperature (related to Biot and Fourier numbers)
Angular Frequency