Fourier number ( thermal )
Area of a Hemisphere
Radius of the turn of an upright bike (for small steering angles)
Oblate spheroid equation(c<a)
Critical grain size (diameter)
Möbius strip (z- coordinate )
Degree of saturation
Maximum value of bending moments for a center loaded beam supported by two simple supports
Nose cone (Spherical)
Laplace domain ( series RLC circuit)