Question about 1st and 2nd law
Question about 1st and 2nd law
(OP)
Theoretically, if the 2nd law is broken, doesn't that automatically break the 1st law as well?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Question about 1st and 2nd law
|
RE: Question about 1st and 2nd law
The 2nd Law is routinely broken over short time spans, during many chemical reactions.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Question about 1st and 2nd law
IRstuff, what do you mean by "routinely broken" ?
RE: Question about 1st and 2nd law
Thus, the spontaneous ordering of atoms into crystals and aggregation of atoms into organic molecules have been touted as being contrary to the second law.
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Question about 1st and 2nd law
For example, the radiator on your car is hotter than ambient air temp, and the first law says the energy lost form one body ( radiator) equals the heat gained by the other body ( ambient). The 2nd law says the heat goes from the hot body (radiator) to the cold body (ambient). But you can pretend the opposite direction of heat flow, from ambient to radiator, meet the 1st law, and violate the 2nd law.
RE: Question about 1st and 2nd law
RE: Question about 1st and 2nd law
The construction of a skyscraper from materials originally dispersed over Earth, the ordered symbols on a printed page, the growth of a living thing from a random mix of molecules, the fractionation of compounds by distillation, or by crystallization, are all examples in which entropy decreases.
However, all those examples do not involve "closed" systems. The entropy decrease associated with those processes is more than balanced by the entropy increase elsewhere in the universe as moltenmetal says.
We cannnot escape the second law of thermodynamics.
Therefore violating it is just a creature of the imagination.
One may as well pay a visit to the following link:
http://en.wikipedia.org/wiki/Entropy
RE: Question about 1st and 2nd law
One can write as follows:
First Law
Q – W = ?U
Second Law
?S = Q/T
Overall, entropy is always >= 0 ...
Thanks,
Gordan
http://engware.i-dentity.com
RE: Question about 1st and 2nd law
Was there a reason you asked?
Patricia Lougheed
Please see FAQ731-376: Eng-Tips.com Forum Policies: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.
RE: Question about 1st and 2nd law
Second Law Of Thermo: You Can't Break Even
If you could break the second law, there would be perpetual motion....when was the last time you saw perpetual motion?
RE: Question about 1st and 2nd law
Davefitz in thread395-176625: Explain Entropy? gives a reasonable answer to the original query.