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Val
  • Member for 9 years, 8 months
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7 votes
4 answers
3k views

Optimal speed for the water wheel

6 votes
5 answers
4k views

Relativistic origin of magnetic field

5 votes
1 answer
2k views

What do up-left orthogonality has in common with up-down and what is their relationship?

4 votes
6 answers
3k views

Why it is colder in mountains, at high altitudes?

3 votes
1 answer
309 views

Why do organisms accumulate potential energy?

3 votes
3 answers
561 views

Configuration space of particles in the box

3 votes
1 answer
235 views

What is the basic idea behind how quantum computation is supposed to work?

3 votes
6 answers
2k views

Relativistic charge density in a closed loop

3 votes
1 answer
811 views

Black Hole evaporation through virtual couples at the horizon

3 votes
4 answers
410 views

Coherence effect on collecting sun light by mirrors

2 votes
1 answer
254 views

${1 \over T} e^{-i/T}$ for Boltzmann-Gibbs distribution

2 votes
1 answer
206 views

greenhouse trap and perpetual motion

2 votes
2 answers
305 views

How irreversible processes are possible?

1 vote
1 answer
229 views

How does acceleration affect the orbit?

1 vote
3 answers
542 views

How is this possible that photons are absorbed?

0 votes
1 answer
49 views

Why is up vector orthogonal to left vector?

0 votes
1 answer
342 views

Why body starts moving when force is applied? [duplicate]

0 votes
1 answer
164 views

What do they mean by $\langle u_i |O| u_j\rangle$ in quantum mechanics

0 votes
1 answer
3k views

measuring electromagnetic induction

-3 votes
3 answers
2k views

There must be free positive charges, moving oppositely to electrons for the wire with current to stay neutral