robphy's latest activity
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robphy replied to the thread Undergrad Reciprocal time dilation on the example with two moving trains.Then make the arithmetic easier by using (say) 5.0 s and 4.0 s. -
robphy replied to the thread High School Can anyone deeply understand relativity?.Take the next sentence in my quote. A "light-second" is a perfectly good unit of length, and on the road to truly natural units where...
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robphy replied to the thread Undergrad Reciprocal time dilation on the example with two moving trains.Draw a position-vs-time graph (aka a spacetime diagram) which will likely clarify the setup and the problem.
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robphy reacted to pinball1970's post in the thread Cover songs versus the original track, which ones are better? with
Like.
I have some catching up to do! -
robphy reacted to Dale's post in the thread High School Can anyone deeply understand relativity? with Like.
My “aha moment” came when I drew my first spacetime diagram complete with coordinate lines for both frames via the Lorentz transform...
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robphy reacted to sbrothy's post in the thread High School Can anyone deeply understand relativity? with
Haha.
I can't believe I got the last word in a thread in the relativity forum?! I'm sure you're yanking my chain now! This wont stand... -
robphy replied to the thread High School Can anyone deeply understand relativity?.Just for historical fairness, one should also mention Galileo (...
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robphy reacted to Ibix's post in the thread High School Can anyone deeply understand relativity? with Like.
Special relativity is fairly simple, although @robphy is absolutely correct that you need a modern geometric approach to make it simple...
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robphy replied to the thread High School Can anyone deeply understand relativity?.In college, I had a grasp of tensor calculus and could work problems in special relativity ...but there was a disconnect. My "aha...
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robphy replied to the thread High School Can anyone deeply understand relativity?.I love this quote... (bolding mine)
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robphy replied to the thread High School Can anyone deeply understand relativity?.I am pointing out how along the way lots of attempts have been tried, and how one can try to avoid the various potholes that some...
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robphy replied to the thread High School Can anyone deeply understand relativity?.The essential mathematics underlying special relativity is a - mild generalization of Euclidean Geometry (called Minkowski spacetime...
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robphy replied to the thread Appliances Samsung smart TV intermittently ‘glitching’.From what I understand of the reddit post I linked, since Bluetooth uses 2.4GHz, it would be good to get the 2.4GHz-wifi width as small...
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robphy replied to the thread Cover songs versus the original track, which ones are better?.The Audience is Listening (1990) from https://en.wikipedia.org/wiki/Passion_and_Warfare https://en.wikipedia.org/wiki/Steve_Vai...
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robphy reacted to CrysPhys's post in the thread Which textbook should I use for self studying calc-based physics? with Like.
In your specific scenario, assuming you have access to all three, use all three. No harm in that; and you'll get the benefit of...
