Dale's latest activity
-
I like to think of a/the core pursuit in mechanical engineering as a game of "follow the energy". It's very common for your energy to... -
OK, and where is energy "destroyed" here (aside of dissipation by friction)?
-
I think this is roughly the apparatus OP has in mind. The two green discs are identical and counter-rotate about the blue axle with...
-
How can you even suggest such an experiment? Where would you get two identical grinders with no (or at least equal) friction at every...
-
During those 10000 seconds, if energy is going into the system but the system maintains a constant mechanical energy, then that energy...
-
Dale replied to the thread Undergrad Is energy really conserved?.The heat is different. If the experiment is done in an insulated chamber then the 10000 second chamber will have a higher temperature...
-
I’m a retired ex physicist I guess. Although I have a first degree in theoretical physics and did post graduate studies ( structural...
-
Dale reacted to PeterDonis's post in the thread Undergrad On the Quantum Mechanics of Entropic Forces with
Like.
It does no such thing. GR says nothing whatever either way about black hole entropy and temperature. Temperature and entropy don't even... -
Dale replied to the thread Insights Thinking Outside The Box Versus Knowing What’s In The Box.After a severe thread cleanup, and several thread bans, this thread is reopened. Please remember that we want to keep PF productive...
-
Dale replied to the thread Undergrad Is energy really conserved?.OK, so you don't seem to understand what it would take to show that energy is not conserved. To show energy non-conservation you have...
-
Dale reacted to renormalize's post in the thread Insights What Exactly is Dirac’s Delta Function? - Insight with Like.
Hopefully you aren't just copying your equations and citations from AI responses.
-
Dale reacted to renormalize's post in the thread Insights What Exactly is Dirac’s Delta Function? - Insight with Like.
It's elusive because neither of those citations support your claim. Here's an excerpt from pg. 398 of your first reference: These are...
-
Dale reacted to berkeman's post in the thread Insights Thinking Outside The Box Versus Knowing What’s In The Box with Like.
Sorry, what does oth mean? Creative thinking can involve both, but modulo the fundamental laws that we understand. Like the...
-
Dale reacted to Isabella Hope's post in the thread Insights Thinking Outside The Box Versus Knowing What’s In The Box with Like.
oth matter, but in different ways. Thinking outside the box helps you find creative solutions you wouldn’t normally consider. But...
-
Dale reacted to fresh_42's post in the thread Insights Thinking Outside The Box Versus Knowing What’s In The Box with Like.
I'm not sure I understood you correctly. The article is a historical perspective of the, in my mind, biggest turning points in physics...