The length of life of incandescent lamps has been fixed by manufacturers at too low a level as a result of a widely accepted piece of mathematics which, this paper argues, is erroneous. On amending the mathematics it is shown that the length of life should be fixed at about 50% above present values; it is also suggested that, if other elements in the calculation were amended, a further lengthening would be required.
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References
1.
1 Strange, J. Ws, Second report on the supply of electric lamps, Appendix 7, Monopolies Commission (1968).
