Kurt Hikes
  • Member for 4 years
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3 answers
27 votes
2k views
3 bookmarks
Why no proton microscopes? Proton diffraction; or proton scattering experiments? Proton crystallography?
6 answers
18 votes
4k views
7 bookmarks
Why doesn't Hawking radiation add to the mass of a black hole just as much as it subtracts from it?
3 answers
16 votes
2k views
1 bookmarks
Why, precisely, is argon used in neutrino experiments?
4 answers
11 votes
3k views
2 bookmarks
If a polarized light wave is indistinguishable from its original self after being flipped 180°, why doesn't a photon have a spin of two?
2 answers
10 votes
1k views
3 bookmarks
Why is Rubidium-87 used for Bose-Einstein condensates?
2 answers
8 votes
722 views
Do the mean lifetimes of short-lived particles follow a Gaussian (or 'normal', or 'standard') distribution? When plotted?
3 answers
7 votes
1k views
What are the advantages of an electron-electron collider vs. An elec./positron one? Has one ever been built?
1 answers
6 votes
524 views
1 bookmarks
Has a free neutron ever been shown to absorb/emit/interact with a photon?
2 answers
5 votes
77 views
Why do the cesium atoms in an atomic clock have to be tossed into the air like a fountain?
2 answers
5 votes
450 views
2 bookmarks
A proton's weak charge is .0719. Is this dimensionless? A ratio?
2 answers
4 votes
178 views
How can the 'spin' of a particle point in the opposite direction of its magnetic moment?
0 answers
4 votes
25 views
Why aren't common magnets made of magnetite, $\rm Fe_3O_4$? Instead of ferrite, $\rm Fe_2O_3$?
1 answers
4 votes
47 views
How does the Planck satellite's detailed map of the CMB lead to a value of the Hubble constant, $H_0$?
2 answers
4 votes
429 views
How do physicists compare the relative strengths of the four forces?
2 answers
4 votes
119 views
1 bookmarks
How is fusion reactor fuel initially accelerated?
1 answers
4 votes
212 views
What does 'high-beta' mean for a fusion reactor?
2 answers
4 votes
536 views
Sodium sometimes absorbs orange-yellow light, sometimes emits it? Huh?
1 answers
4 votes
530 views
Is it at least theoretically possible for an electron and an antimuon or antitauon to annihilate?
4 answers
3 votes
177 views
What is the 'energy localization problem' of general relativity?
1 answers
3 votes
77 views
Why does it take hours or even days to turn on (or power up) the large, powerful superconducting magnet in an MRI machine or fusion reactor?
2 answers
3 votes
61 views
How, exactly, does an electron scatter off of a neutron?
2 answers
3 votes
145 views
1 bookmarks
What does it mean that a neutron has a 'negative' magnetic moment?
3 answers
3 votes
58 views
What is the exponential (or geometric) rule (or law) for uranium enrichment?
1 answers
3 votes
89 views
What is $a_\mu$ in particle physics? In terms of a muon; and its magnetic moment? What is, '$a_\mu$ × $10^9$ - 1165900 '?
1 answers
3 votes
47 views
Why is aluminum more common in the solar system, etc. than sodium and fluorine?
1 answers
3 votes
57 views
Can alpha, beta or gamma particles induce fission?
2 answers
3 votes
205 views
What is a 'quantum break'?
1 answers
3 votes
57 views
Why don't phosphorescent molecules just immediately re-emit the original UV photon?
2 answers
3 votes
421 views
1 bookmarks
How can a neutrino detector tell the difference between the three types of neutrinos?
1 answers
2 votes
98 views
Does Loop Quantum Gravity predict that high-energy photons or light waves will travel faster or slower than low-energy (longer-wavelength) ones?
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