White Holes & the 2nd Law of Thermodynamics

AI Thread Summary
White holes are theorized to be the opposite of black holes, but their existence is debated due to potential violations of the second law of thermodynamics, which states that entropy in a closed system must increase over time. The discussion highlights a request for clarification on how white holes specifically contradict this law. A link to a Cornell University website is shared, providing additional insights into the topic. The conversation suggests a need for expert input from an astrophysicist to further explore these concepts. Overall, the relationship between white holes and thermodynamics remains a complex and intriguing subject.
PhiJ
Messages
44
Reaction score
0
I have read in wikipedia and other places that white holes cannot exist as they violate the second law of thermodynamics. I s'pose my question is a simple one. How?
 
Physics news on Phys.org
Perhaps this thread could be shifted to someplace where an astrophysicist could help...

For now you could read the linked website on the wikipedia page: http://curious.astro.cornell.edu/question.php?number=108
 
Last edited by a moderator:
Wow! Although the question still remains, that was an absolutely fascinating web page! Thank you very much!
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Question about the 2nd law of thermodynamics (heat loss)
Replies
1
Views
1K
Entropy and the Laws of Thermodynamics
Replies
3
Views
1K
Calculating of currents in a circuit
Replies
2
Views
727
Thermodynamics: Internal Energy, Heat and Work Problem
Replies
1
Views
2K
Thermodynamics -- first and second law concepts
Replies
2
Views
2K
Is the 2nd Law of Thermodynamics a Fundamental Law or a Statistical Principle?
Replies
1
Views
1K
Newton's 2nd Law: Why is Resistance Considered a Positive Force?
Replies
3
Views
2K
I Questions about Hawking radiation and extremal black holes...?
Replies
4
Views
1K
Rocket acceleration problem: confused about Newton's 2nd Law
Replies
42
Views
5K
Tension in a rope hanging between 2 trees
Replies
24
Views
1K

Hot Threads

Recent Insights

Back
Top