The energy required to start something is more than the energy needed to maintain it?

submitted by TheBlackSun from (self.AskSaidIt)

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[–]GuyWhite 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

True.

An exothermic reaction may need a heat of initiation. The reaction then requires no energy for it to continue.

Example, a spark is needed to initiate combustion in an engine. After combustion begins, no further energy input is need to sustain the combustion.

[–]TheBlackSun[S] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Thanks for the reply