PeroK's latest activity
-
This is tricky even without introducing the complexities of an evaporating black hole. "Crosses the horizon at a finite proper time... -
PeroK reacted to javisot's post in the thread Complexity Physics and Tipping Points in Chess with
Skeptical.
I've heard this many times too, but I think it's an outdated and unproven view of chess. We're clear that chess is a finite game; it was... -
PeroK replied to the thread I I don't see how a black hole's event horizon can be crossed.That's a unique approach to learning!
-
PeroK replied to the thread I Is calling fictitious forces "not real" just about terminology?.Nothing. They are just different names for the same things. If you taught a class of students using those terms and a class of...
-
PeroK replied to the thread I Is calling fictitious forces "not real" just about terminology?.The confusion may be independent of the words. Choose whatever words you like and the conceptual difficulty remains. Using "invariant"...
-
PeroK reacted to A.T.'s post in the thread I Is calling fictitious forces "not real" just about terminology? with
Like.
Sorry, I should have made clear that not all naming choices are bad. And let's not derail the thread by discussing those that weren't... -
PeroK replied to the thread I Is calling fictitious forces "not real" just about terminology?.I must admit I don't generally use the terms "action" and "reaction". But, "real" and "fictitious" make perfect sense to me. I never...
-
PeroK replied to the thread I Is calling fictitious forces "not real" just about terminology?.Let's hear your better words for displacement, velocity, speed, acceleration, force, mass, energy, momentum, torque, angular momentum...
-
PeroK reacted to A.T.'s post in the thread I Is calling fictitious forces "not real" just about terminology? with
Sad.
Physists of the past have been brilliant at describing nature using math, but terrible at choosing the right words for it. Both naming... -
PeroK reacted to kuruman's post in the thread How fast is the fly's shadow moving? with
Informative.
As your drawing shows, the angle between the Sun's rays and the fly's velocity is 66°. The question is which trig function, sine or... -
PeroK replied to the thread I Is calling fictitious forces "not real" just about terminology?.PS and, as you are at rest in your own reference frame, you have to add the same (*) fictitious force to yourself in order for Newton's...
-
PeroK reacted to jbriggs444's post in the thread I Is calling fictitious forces "not real" just about terminology? with Like.
Yes. I agree with pretty much everything you have written about the distinction between real and fictitious forces. A real force (or...
-
PeroK replied to the thread I Is calling fictitious forces "not real" just about terminology?.The simplest explanation, IMO, is this: If you measure an object to be accelerating, then there are two different reasons for this: 1)...
-
PeroK reacted to renobueno4153's post in the thread I Is calling fictitious forces "not real" just about terminology? with Like.
Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference...
-
PeroK replied to the thread A three month long summer vacation from public school seems stupid.A couple of guys I worked with tried that. They slept two hours a night in the Data Centre and clocked on for 150 hours one week. One...