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dan
  • Member for 11 years, 5 months
  • Last seen more than a month ago
  • Paris, France, Earth, Milky-Way
17 votes
2 answers
1k views

How can we detect antihydrogen?

11 votes
5 answers
1k views

Correct definition of “speed” of gravity

5 votes
3 answers
333 views

Do physical entities with one dimension equal to 0 exist?

4 votes
3 answers
436 views

Finite or ∞ set of masses & ∃ gravity center?

3 votes
1 answer
834 views

Michelson-Morley experiment revisited under the light of special relativity

2 votes
1 answer
458 views

Description of transparency of a Faraday cage to different frequencies?

2 votes
0 answers
99 views

What started the magnetic field of Earth [duplicate]

2 votes
1 answer
100 views

About the nature of gravity

1 vote
1 answer
78 views

Gravitation function (or space-time distorsion variation) below Schwarzschild radius

0 votes
1 answer
96 views

Are the arms of a hurricane along wind direction?

0 votes
0 answers
51 views

Is such a 2 photons interaction possible, and what would be its result?

0 votes
1 answer
122 views

How can we assert $\mathrm{ matter } / \mathrm{ antimatter } \gg 1$ further than $locally$? [duplicate]