Beam Calculator Math

beam(perpendicular) = 2 × throw × tan(½Ø)
beam(parallel) = h × (tan(N + ½Ø) - tan(N - ½Ø))
angle of incidence = atan(h ÷ d)
throw = sqrt(d^2 + h^2)
illustration of variables for beam spread calculations

There is also a MathML version.


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