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  • 0 posts edited
  • 24 helpful flags
  • 160 votes cast
Apr
19
asked Is it possible to create a double slit experiment that can predict when photons have 'likely' passed through the slits?
Apr
17
asked What's meant by: “All observers agree on the combination of basis vectors and components for a tensor”?
Apr
15
awarded  Popular Question
Apr
10
comment Why glass is transparent?
So why does light travel at a different velocity in the vacuum, if it's not absorbed in transparent materials?
Apr
10
answered Is there a physical interpretation of a tensor as a vector with additional qualities?
Mar
28
awarded  Popular Question
Mar
19
awarded  Popular Question
Nov
27
comment What's the point of hamiltonian mathematical formalism of classical mechanics?
@LubošMotl I'm sure you already know that Dimensio1n0 was only 13 when he first joined here, yet was answering questions on the QED Lagrangian!
Nov
14
awarded  Popular Question
Sep
26
comment Meaning of fourth component of velocity four vector
He asked about the physical meaning of the fourth component, not the whole vector.
Sep
16
awarded  Popular Question
Sep
3
awarded  Notable Question
Aug
17
awarded  Notable Question
Aug
16
comment Why define four-vectors to be quantities that transform only like the position vector transforms?
Every frame uses the same Lorentz transformation when transforming events with the same lab space-time coordinates to other frames with the same relative velocity $v$. It's a transformation that doesn't change upon boosting to another frame, making it some kind of "Lorentz invariant". Maybe this isn't appropriate then?
Aug
16
comment Why define four-vectors to be quantities that transform only like the position vector transforms?
In $Q'=\rho(\Lambda)Q$, must the function $\rho$ be a Lorentz invariant if a physical law exists involving these quantities?
Aug
9
accepted What coordinate systems allows the magnitude of the basis vectors to change with position?
Aug
7
asked What coordinate systems allows the magnitude of the basis vectors to change with position?
Jul
22
comment Is the Maxwell Stress Tensor Coordinate Dependent?
What is "the tensor itself"?
Jul
13
awarded  Yearling
Jul
12
asked How does the idea of a scalar potential for a 3-vector field generalize to Minkowski space?