The units are wrong. d is the distance (in metres) from each lens to the cogwheel (not the distance separating). X is in rps not rpm. The required speed of light is in m/s not km/s.
middleAsColumn: Return all but first and last element as a column vector
Convert Fahrenheit to Celsius
Vector Magnitude Calculator
Wind Chill Computation
Number of divisors of a given number
How many rectangles in a grid ?
Slicing the cube
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