the burning phosphorus, and it will nottake fire. This .shows us that the heat of the lampis conducted moie powerfully along the copp^r thanalong the iron. 104 ^^CIENCK IKIMFIIS. [lIKATKn The conduction of heat explains tlic action of thesafety lamp whicli was devised by Sir Humphry Davyfor the use… … Fig. 28. boiling oil, we shall find that the heat of the oil willbe conducted very slowly indeed downwards throughthe liquid ; in fact, a few inches do-svn, the rise oftemperature will be hardly perceptible. But if insteadof heatintr the vessel with water in it from above we BdUiKs.] THYSICS. 105…
Physics
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