robphy's latest activity
-
Your images are very difficult to read, due to how small the images appear. This is one of the reasons that we recommend against posting... -
robphy replied to the thread Looking for lab experiments for a High School Physics class.Another good tool is "Tracker" https://opensourcephysics.github.io/tracker-website/ which does video analysis. It can be trained to...
-
robphy replied to the thread Looking for lab experiments for a High School Physics class.possibly useful set of links https://physics.tcnj.edu/online-teaching-resources-for-physics-instructors/ I second @kuruman 's...
-
-
robphy reacted to kuruman's post in the thread Looking for lab experiments for a High School Physics class with
Like.
My first thought was, have you considered using a smartphone physics app? Advantages 1. All high-school students have smartphones. 2... -
robphy replied to the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations?.Here's a different approach by Fred Hehl: (1999) Classical Electrodynamics: A Tutorial on its Foundations Friedrich W. Hehl, Yuri N...
-
robphy reacted to A.T.'s post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with Like.
Yes, it avoids introducing things like pseudo-vectors into the analysis, which are asymmetrical between two physically symmetrical...
-
robphy reacted to Sagittarius A-Star's post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with Like.
This can be found in chapter 38 of the book "Introduction to Special Relativity, 2nd Edition" by Wolfgang Rindler...
-
robphy replied to the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations?.In my websearch for conventions in Geometric Algebra, I stumbled upon two vocal critics of GA (listed below). Since I am just learning...
-
robphy replied to the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations?.From an old thread of yours on Geometric Algebra...
-
robphy replied to the thread Undergrad Raising and lowering indices using metric tensor.Yes. So, one can conclude (again) the various expressions obtained are equal.
-
robphy replied to the thread Undergrad Raising and lowering indices using metric tensor."Raising" and "lowering" are just notational shortcuts that hide the [invertible] metric. How would you evaluate ##g_{\mu \nu} \left(...
-
robphy replied to the thread Music Cover songs versus the original track, which ones are better?.(2026) audrey123talks - #Slayer - War Ensemble cover guitar and lefty bass +#スレイヤー [You can hear the bass more clearly in the Mar 2025...
-
robphy reacted to Hornbein's post in the thread Music Cover songs versus the original track, which ones are better? with Like.
The orig seems #1 to me.
-
robphy replied to the thread Music Cover songs versus the original track, which ones are better?.(2026) Maya Neelakantan (12 years old) - War Ensemble — Slayer | Guitar Riffs + Jeff Hanneman Solo Tribute see also Maya Neelakantan...
-
robphy replied to the thread Music Cover songs versus the original track, which ones are better?.https://en.wikipedia.org/wiki/You%27re_No_Good NEW * You're No Good - Linda Ronstadt {Stereo} 1974 Van Halen You're No Good live...
