Sagittarius A-Star's latest activity
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Sagittarius A-Star reacted to A.T.'s post in the thread Undergrad Why is the Lorentz Force always perpendicular to velocity? with
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You might be right here. My statement above was based on symmetry w.r.t. the normal to the conductor that passes through the test... -
Sagittarius A-Star reacted to JiuBeixin's post in the thread Undergrad Why is the Lorentz Force always perpendicular to velocity? with
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except the force, cause I don't know the force's direction in frame ##S## now. -
Sagittarius A-Star replied to the thread Undergrad Why is the Lorentz Force always perpendicular to velocity?.Does my picture in posting #26 describe correctly your case in lab-frame ##S##? -
Sagittarius A-Star replied to the thread Undergrad Why is the Lorentz Force always perpendicular to velocity?.In the labframe ##S## in my drawing in posting #26, the ##x## axis points in the same horizontal direction as ##u_1##, the ##y## axis in... -
Sagittarius A-Star replied to the thread Undergrad Why is the Lorentz Force always perpendicular to velocity?.As I understand your scenario, the object is moving in frame ##S## not parallel and not perpendicular to the conductor. But the force... -
Sagittarius A-Star reacted to PeterDonis's post in the thread Undergrad Why is the Lorentz Force always perpendicular to velocity? with
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Which is equivalent to what I wrote in post #4, i.e., it is not just the magnetic force. So what I said in post #4 would apply if one... -
Sagittarius A-Star replied to the thread Undergrad Why is the Lorentz Force always perpendicular to velocity?.One could start from the equation for the Lorentz 4-force and from that it is rest mass-preserving. Source -
Sagittarius A-Star replied to the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations?.In Geometric Algebra, the Hodge * operation is replaced by an algebraic operation, a multiplication with the unit pseudo-scalar ##I##... -
Sagittarius A-Star reacted to robphy's post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with
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Here's a different approach by Fred Hehl: (1999) Classical Electrodynamics: A Tutorial on its Foundations Friedrich W. Hehl, Yuri N... -
Sagittarius A-Star replied to the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations?.This can be found in chapter 38 of the book "Introduction to Special Relativity, 2nd Edition" by Wolfgang Rindler... -
Sagittarius A-Star reacted to A.T.'s post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with
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Yes, it avoids introducing things like pseudo-vectors into the analysis, which are asymmetrical between two physically symmetrical... -
Sagittarius A-Star reacted to Hornbein's post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with
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A nice thing about geometric algebra is that there is no such thing as "the right hand rule." The sign comes about naturally. An... -
Sagittarius A-Star reacted to FactChecker's post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with
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I don't think their criticisms address what appealed to me about geometric algebra. I liked that it started with a basic geometrical... -
Sagittarius A-Star reacted to robphy's post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with
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In my websearch for conventions in Geometric Algebra, I stumbled upon two vocal critics of GA (listed below). Since I am just learning... -
Sagittarius A-Star reacted to robphy's post in the thread Graduate What Exactly Is The Physical Content Of Maxwell's Equations? with
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From an old thread of yours on Geometric Algebra...




