Re: ballistocardiogram
As any Briton kno:
var x = quantity of last night's curry consumed in pounds, presumed to be a standard volume once processed.
var y = quantity of beer consumed last night in pints, which causes dilution of density of x
var z = achieved position above or upon the throne immediately prior to release, in inches
var s = strength of curry: 1 being lowest to 5 being Vindaloo+ (required for speed calculation)
var m = x * y
var f = z/s² (strength squared)
Thus ballistic force is a simple Newtonian calculation of m * f
I presume that "ballistocardiogram" is the recording the loo seat makes of the speed you were ejected off the seat at?