PeterDonis's latest activity
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PeterDonis reacted to martinbn's post in the thread Undergrad One does not “prove” the basic principles of Quantum Mechanics with
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This is your claim, but so far your quotes are not convinicing. I am not sure about this either. Just before this it says "Heisenberg... -
PeterDonis replied to the thread High School Thought Experiment: Behavior of shadow of object moving at speed c.This also applies to looking at the object itself. The OP might want to look up Penrose-Terell rotation. -
PeterDonis reacted to Sagittarius A-Star's post in the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit? with
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They try to avoid the use of thrusters and use control moment gyroscopes most of the time, to not disturbe micro-gravity experiments... -
PeterDonis replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.The vorticity isn't a cause, it's a description. As I understand it, the rotation of the ISS wrt the gyroscope's axis is maintained by... -
PeterDonis replied to the thread Undergrad Entanglement swapping in the context of Indivisible Stochastic Process.This is just a consequence of the fact that, in general in quantum experiments, you have to know the entire experimental context in... -
PeterDonis replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.Strictly speaking, I suppose this is true, but the proper acceleration will be extremely small, because the only reasons it would be... -
PeterDonis replied to the thread For those who ask: "What programming language should I learn?".I did, yes. -
PeterDonis replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.Note, though, that an orbiting satellite is in free fall, so locally it is not the same as the accelerating elevator. So you can't... -
PeterDonis replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.Yes, it is, but note that all of these "precessions" are relative to an observer at rest at infinity. If all you have is local... -
PeterDonis replied to the thread Undergrad Can a Gyroscope in a Satellite Detect Orbit?.He means that it rotates 360 degrees relative to the gyroscope's axis, which is Fermi-Walker transported along the ISS's worldline. -
PeterDonis replied to the thread For those who ask: "What programming language should I learn?".Actually, I realized there's another one as well: Pascal (thanks to Borland, from Turbo Pascal to Delphi). -
PeterDonis replied to the thread For those who ask: "What programming language should I learn?".LOL. :smile: But yes, it's true, "easy to get started coding" can go either way. Wow, you've subjected yourself to even more than I... -
PeterDonis replied to the thread Undergrad Physical Interpretation of Frame Field.You're welcome! -
PeterDonis replied to the thread Undergrad Physical Interpretation of Frame Field.Yes, all this is true and well known. Is there a question you have about this topic that hasn't been addressed yet?