Normalized water content ( effective saturation van Genuchten)
Sum of natural numbers raised to the fifth power
Sum of natural numbers raised to the fourth power
Gaussian beam (Beam width or spot size)
Van 't Hoff equation
Semi-Latus Rectum - Ellipse / Hyperbola
Complex amplitude of the primary wave
Cotangent function
Mutual inductance factor (coils' inductance)
Nose cone (Conical)