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age 21
visits member for 2 years, 7 months
seen 5 hours ago

Apr
8
reviewed Edit What is Timelike Quantum Entanglement?
Apr
8
revised What is Timelike Quantum Entanglement?
title correction
Apr
6
reviewed Reject and Edit How can the contact point of rolling body have zero velocity?
Apr
6
revised How can the contact point of rolling body have zero velocity?
edited tags, improved previous edit suggestion
Apr
6
reviewed Reject Calculating charge density
Apr
6
comment Would a spinning, evenly charged sphere generate a magnetic field?
@HolgerFiedler the magnetic field of a charged spinning spherical shell is exactly like a point dipole outside the surface: hep.princeton.edu/~mcdonald/examples/rotatingshell.pdf and is not "along the z axis", and Marcel's answer does not state that. The equations you are using are confused and are used without meaning. The equation $\nabla \times B=\mu_0 J$ contains different physics than the Lorentz force law.
Apr
6
comment Would a spinning, evenly charged sphere generate a magnetic field?
@HolgerFiedler it DOES mean rigid body, but all the FORCES involved are supplied by the structural integrity of the field. Your equation has nothing to do with the field actually generated by the charges. The Lorentz force law does not give you the field generated by the charges.
Apr
6
revised Lagrangian formalism (demonstration)
added 30 characters in body
Apr
6
answered Lagrangian formalism (demonstration)
Apr
6
comment Would a spinning, evenly charged sphere generate a magnetic field?
@HolgerFiedler your formula would give the needed $\vec{B}$ field to support the charges moving in circles, as if the charged sphere itself had no structural integrity. Which is not relevant to the question that was asked. (That's why people are saying you're wrong -- "F" is irrelevant to the question asked so there's no reason why "$F\cdot qv$" should mean anything, let alone be zero).
Apr
5
answered How does the magnetic field generated from a rectangular cross-sectional current-carrying conductor differ from a circular cross-sectional conductor?
Apr
5
reviewed Approve How does the time evolution of a hydrogen atom work?
Apr
5
reviewed Approve What are some good online texts for electromagnetism?
Apr
5
reviewed Approve How can I relate linear and angular motion using a single formula?
Apr
5
reviewed Edit Can the gravitational constant be directly measured?
Apr
5
revised Can the gravitational constant be directly measured?
fixed grammar, title, improved LaTeX
Apr
5
reviewed Approve Why does it seem as if big vehicles “attract” mine when I drive close to them?
Apr
4
reviewed Approve Confusion regarding area from graph
Apr
4
comment Translation Operators
Well in one $\delta x$ is an infinitesimal scalar, and in the other $\hat{x}$ is an operator with finite eigenvalues. So the first expansion is incorrect.
Apr
4
reviewed Approve Is it possible that every single isotope is radioactive, and isotopes which we call stable are actually unstable but have an extremely long half-life?