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celtschk
  • Member for 10 years, 5 months
  • Last seen more than a month ago
17 votes

What are the units of the quantities in the Einstein field equation?

16 votes

Is the graviton hypothetical?

10 votes
Accepted

How are the Pauli matrices for the electron spin derived?

8 votes
Accepted

Atomic nucleus consisting of only neutrons?

8 votes

What is the difference between "kinematics" and "dynamics"?

8 votes
Accepted

Special Relativity, 2nd Postulate -- Why?

7 votes

Helium and its unique behaviour

7 votes

What makes some laser beams visible and other laser beams invisible?

6 votes
Accepted

Why can't electromagnetic radiation from magnets be used for apparent perpetual motion?

6 votes

How far can light go?

5 votes
Accepted

Riemann curvature tensor notation in Wald

5 votes
Accepted

Is there a handwavy way to explain what quantum correlation means?

5 votes

are sub-atomic particles really particles or mere concepts in our minds?

5 votes

Can someone please qualitatively explain unitary group from a physics perspective?

4 votes
Accepted

Mass-Energy Equivalence theory energy or momentum is not conserved?

4 votes

Does it make sense to have a theory of thermodynamics about coldness?

4 votes

What is the physical meaning of commutators in quantum mechanics?

3 votes

What's the meaning of dimensionality?

3 votes

Does the Banach-Tarski paradox contradict our understanding of nature?

3 votes
Accepted

How can I find the motion equations of the 2-dim harmonic oscillator?

3 votes

Are there two theories that are mathematically identical but ontologically different?

3 votes

Can matter be converted to information?

3 votes
Accepted

Show that two families of curves are orthogonal (without using orthogonal trajectories)

2 votes
Accepted

How do we know quantum entanglement exists/happens?

2 votes

Why is this entangled?

2 votes
Accepted

Probability of measuring two observables in a mixed state

2 votes
Accepted

What's wrong with this equation for harmonic oscillation?

2 votes

In the dual-slit experiment, can the time it takes for a photon to arrive reveal the path it took?

2 votes

How can indeterminacy in quantum mechanics be derived from lack of ability to observe a cause?

2 votes

What are observables?