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Talk:Second Law of Thermodynamics (view source)
Revision as of 22:23, February 7, 2014
, 22:23, February 7, 2014→100 Billion: new section
:*The phrase "even if energy remains constant" is too vague. What energy? I believe you are referring to the total energy of the machine's system, implying that the system is isolated and the First Law of Thermodynamics holds true, but this is not very clear. Keep in mind that true hypothetical perpetual motion machines are isolated systems by definition.
:*The phrase "even if energy remains constant" is too vague. What energy? I believe you are referring to the total energy of the machine's system, implying that the system is isolated and the First Law of Thermodynamics holds true, but this is not very clear. Keep in mind that true hypothetical perpetual motion machines are isolated systems by definition.
:--[[User:Randall7|Randall7]] 16:52, 11 October 2012 (EDT)
:--[[User:Randall7|Randall7]] 16:52, 11 October 2012 (EDT)
== 100 Billion ==
It is mentioned in the article that some estimate that the Earth can harbor 100 billion people. This seems like the kind of thing that should have an external link attached to it for those who want to know who "some" are. I don't know if the person who originally added that still has the relevant information handy.