Abstract: A method of determining the weight distribution of a population is provided, including the steps of a) determining a likely weight range for members within the population; b) enabling a plurality of members of the population to impact on a weighing device wherein multiple members may be on the weighing device at one time; c) recording inputs from the weighing device wherein each input corresponds to the presence of the multiple members on the weighing device at one time; and d) using values derived from the inputs and applying an algorithm to specify a number of subsets, each of the subsets representing a discrete number or proportion of members with weight values associated with same.

Abstract: An apparatus (1) for measuring the transmission or attenuation of electromagnetic radiation through an object (6), said apparatus including an electromagnetic radiation emitter (2) and detector (3), characterised in that to perform transmission/attenuation measurements, the apparatus in configurable such that said emitter (2) is positioned immediately adjacent the surface of said object (6) and said detector (3) is positioned on an opposing side of the object (6) such that the detector (3) solely, or at least substantially receives electromagnetic radiation transmitted through the object (6) from the emitter (2).