Authentic Science Fiction Monthly No. 54 — page 82: what you’re looking at

Machine-transcribed from the original scan — historical spelling and the odd misread are preserved.

COLD POWER EAT IS ONE OF OUR MOST useful forms of energy— particularly of energy required for transportation, The inter- nal combustion engine uses the expansion of hot gases in the cylinders. The steam en- gine, whetherturbineor piston, uses the heat produced by burning coal or oil to raise steam pressure. Jet engines use the high temperatures produced by burning fuels to move gases at high velocity backwards and so_ propel aircraft and land vehicles in a forward direction. The rocket, the jumping cracker, the Cath- erine wheel and the Roman candle contain chemicals which react with each other to produce heat and fast moving gases. Shot and shell, bullets and torpedoes are fired by propellant powders, chemicals such as_ cordite, which contain molecules which readily break down to form volumes of hot gases, which in their insistence on 81 by W. W. BYFORD, B.Sc. getting free to expand get things moving. Those highly efficient com- bustion engines, the muscles of animals, convert the heat produced by oxidation of glucosetoenergy ofmovement. THIEF OF POWER In the internal combustion engine heat has to be taken away from moving parts by oil and the engine itself cooled by water, which in turn is cooled by the radiator —even more heat escapes with the hot gases from the cylin- der and is discharged through the exhaust pipe. The loco- motive engine sends much heat out of the funnel. A . Chataway or a_ Bannister produces much useless body heat which has to be lost as Jatent heat of vaporisation by perspiration. All of this lost heat represents lost energy. Heat may be a thief of power. Some of this I have said in comiclooks.corn