robphy's latest activity
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robphy reacted to Filip Larsen's post in the thread High School Good drawing of Earth's orbit for model? Possibly vector file? with
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The seasonal variations in weather on Earth are primarily driven by the tilt of the Earths spin axis relative its orbit around the Sun... -
robphy replied to the thread High School Deriving the "third" kinematic equation using graphs.A variant of this proof is visible in this v-vs-t graph of mine from another thread...
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robphy reacted to kuruman's post in the thread High School Deriving the "third" kinematic equation using graphs with Like.
As @Ibix remarked, some algebra is inevitable when you translate a graphic form into an algebraic form. Here is the simplest way I can...
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robphy reacted to renormalize's post in the thread Does the Lorentz factor aid understanding of SR, or obscure it? with Like.
I disagree. Consider this right triangle: We have the "awkward...
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robphy replied to the thread Does the Lorentz factor aid understanding of SR, or obscure it?.As a student, and later as an instructor, I find it useful to draw connections and make appropriate analogies with previous knowledge...
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robphy replied to the thread Insights AI Enriched Problem Solving.https://www.quantamagazine.org/how-terry-tao-became-an-evangelist-for-ai-in-math-20260608/
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robphy replied to the thread Rush Redux 2026.
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robphy replied to the thread Does the Lorentz factor aid understanding of SR, or obscure it?.This thread is about Special Relativity, where the field equations are not treated. For an introduction to Special Relativity, I would...
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robphy replied to the thread Rush Redux 2026.Rush - Tom Sawyer - 50 Something Tour - Opening Night LA KIA Forum RUSH - YYZ - Kia Forum - 6-7-26 - Inglewood Los Angeles RUSH -...
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robphy replied to the thread Does the Lorentz factor aid understanding of SR, or obscure it?.Note: special-relativity is hyperbolic-trigonometry in flat Minkowski spacetime (not curved hyperbolic geometry, unless you are talking...
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robphy replied to the thread Does the Lorentz factor aid understanding of SR, or obscure it?.The quantity it represents is important, but not necessarily expressed in terms of the spatial velocity ##v##. Indeed...
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robphy replied to the thread Insights AI Enriched Problem Solving.
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robphy replied to the thread Hi! Can someone explain about Differential Equations?.Possibly enlightening: Differential equations, a tourist's guide | DE1 3Blue1Brown
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robphy replied to the thread Playing the guitar, the difference between being good and being a genius.....(June 2026) Jamming in Guiyang with my bro @maituoguitarlujunxi Couldn’t be happier! justincaterina YouTube short: All right! I m...
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robphy reacted to symbolipoint's post in the thread Playing the guitar, the difference between being good and being a genius.... with Like.
#128, though haven't tried to view-listen to any of those videos, no matter the culture where a person learns something from outside...
