All Questions
11
questions
3
votes
2
answers
3k
views
How can it be "unfortunate" while this is what the experiments want?
In John Gribbin's Ten Tantalizing Truths, the author discusses the cyclotron:
for a particular mass as the particles spiral outward, the rotation frequency stays constant, because the particles are ...
- 145
8
votes
3
answers
3k
views
The physics behind a homemade particle accelerator
I have made a particle accelerator, like the one in the following image.
homemade particle accelerator
When a metallic pellet passes through the coil, it lights up and generates a magnetic field ...
-2
votes
3
answers
171
views
What is the trajectory a hypothetical stationary electron will make inside a static magnetic field?
It is known that an electron in a magnetic field will undergo gyromagnetic rotation of its spin magnetic dipole moment around the $B$ vector of the external magnetic field.
Also in addition to the ...
- 4,170
1
vote
4
answers
265
views
What is the physical explanation of why a stationary fermion is experiencing zero force from an external static magnetic field?
Since fermions like free electrons have an intrinsic spin magnetic dipole moment shouldn't they when subjected to an external static magnetic field experience a magnetic force even assuming they are ...
- 4,170
0
votes
0
answers
45
views
Formalizing the Askar'yan Effect
Wikipedia defines the Askar'yan Effect as...
[The] Askaryan effect is the phenomenon whereby a particle traveling faster than the phase velocity of light in a dense dielectric... produces a shower of ...
- 799
2
votes
2
answers
159
views
How do we measure other particles that are not photons?
I believe most particle detectors are based on either the photoelectric effect, or simply on excitation of atoms by light. Then, the energy resulting from this process is converted into something we ...
- 1,056
4
votes
4
answers
3k
views
What causes the spirals to be inward in the bubble chamber images?
My understanding is that the circular paths are caused by the action of the Lorentz force on the electrons and positrons.
However, I'm not sure why the circular paths are going inward. I have two ...
- 8,660
0
votes
1
answer
171
views
Can the deflection of an electron beam create a Lorentz Force capable of propelling a spacecraft?
Please reference the conceptual drawing below of this spacecraft propulsion idea. In the vacuum of outer space, if a strong electron beam enters a strong magnetic field, as shown in the drawing, it ...
user217618
0
votes
1
answer
124
views
In Rutherford's experiment did the foil become ionized?
Since alpha-particles (used in Rutherford's experiment) have positive charge, they probably should attract electrons (and stop being alpha particles). Was it the case in Rutherford's experiment? Did ...
user168013
0
votes
1
answer
302
views
Fusion, Magnets and Quantum Generators [closed]
I cannot even play like I'm even at this level, but this is the fusion reactor in Germany called the Wendelstein 7-X stellarator.
These doughnut-shaped magnets (often seen on Physic Exchange) are ...
- 1
3
votes
2
answers
1k
views
Oil drop experiment and quantization of charge
How to systematically show that the resulting charges in oil drop experiment are integers multiplied by $e$ in other word how to extract $e$ from the data?
- 4,194