Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 97
or*» of iron, with their ends together, atwhich they are h ted by means of a lamp. After thelamp has burned for some time, let us take two littlebits of phosphorus, and place one of them at the endof the copper rod furthest away from the flame. Itwill soon take fire. Now place the other piece onthe… … iS- 27- The conduction of heat explains the action of thesafety lamp which was devised by Sir HumphryDavy for the use of miners, but this very useful lamphas already been fully described in the ChemicalPrimer (Art. 47). 66. Convection of Heat.—If we take a vesoelfull of water, and float on its…
Physics
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