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Elio Fabri
  • Member for 3 years, 11 months
  • Last seen this week
  • Pisa, Italy
13 votes

Why are longwave radio towers so tall?

10 votes

Why do bosons tend to occupy the same state?

9 votes

Is Pauli-repulsion a "force" that is completely separate from the 4 fundamental forces?

8 votes

Homework question about an engine pulling a train

8 votes

If gravity disappeared, would Newton's third law make everything that was pressed to the ground by gravity get pushed upwards?

7 votes
Accepted

Relative velocities in Circular Motion

7 votes

Why does speed of light have to be constant?

7 votes

What does a photon emitted by an atom "look" like?

6 votes

How did Goudsmit and Uhlenbeck figure out the electron has spin $\frac{\hbar}{2}$?

6 votes
Accepted

Why Pascal's Law is true and what is the mechanism for force amplification at molecular level?

5 votes

Can the laws of mechanics be framed without invoking coordinate systems?

5 votes
Accepted

$r$ and $R$ difference with Schwarzschild metric

5 votes

Why do bodies traveling at constant velocity experience the same physics?

5 votes

How would a passing gravitational wave look or feel?

4 votes

When to apply Lorentz transformations and laws of time dilations and length contractions: explanations

4 votes

What is the hermitian of the time reversal operator?

4 votes
Accepted

Why the time period of pendulum with infinite length is $84.6$ minutes?

4 votes

How to derive $c=1/\sqrt{\varepsilon_0\,\mu_0}$ from integral form of Maxwell equations?

4 votes

Can you outrun a photon inside the event horizon of a black hole?

4 votes
Accepted

Why are there no transitions between orthohelium and parahelium?

4 votes

Why is the parity of the spatial wavefunction $(-1)^{\ell}$?

4 votes

How to do calculation in relativity of simultaneity

4 votes

Why is there a physical preference to real numbers?

4 votes

Do Maxwell's equations predict the speed of light exactly?

4 votes
Accepted

Can body of one temperature ever cause higher temperature in another body?

4 votes
Accepted

Why must I solve the de Broglie relationship in a single dimension instead of all three?

3 votes

Does the Universe itself move to any direction on top of expansion?

3 votes

Galilei Invariance and Newton Third Law

3 votes

SR time dilation discussion meaningless when there is gravity?

3 votes
Accepted

How do resistors form electric fields and thus potential drops?

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