Tagged Questions
1
vote
1answer
47 views
Matter and anti-matter collision energy problem
From Beyond Einstein, by Michio Kaku and Jennifer Thompson, Chapter 13, Antimatter :
Dirac, also focused on the fact that Einstein's equation $E=mc^2$ wasn't totally true. (Einstein was aware that ...
-2
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0answers
30 views
What is the minimum amount of energy/mass? [duplicate]
is there a minimum amount of matter? perhaps the smallest elementary particle?
what about energy? Is there a minimum amount of energy or can this amount be infinitely small?
0
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1answer
69 views
From where do the permanent magnets get energy from? [duplicate]
I have a doubt about permanent magnets. If a magnet is permanent it can attract some materials permanently.
Attracting something involves energy. If a permanent magnet can do this forever, from where ...
2
votes
2answers
121 views
What particles carry various forms of energy?
If I didn't get this wrong, light or heat energy consists of photons and they in turn effect electrons' behavior and thus responsible for chemical and electrical energy. What kind of similar particle ...
0
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0answers
30 views
Energy of split of nucleus [closed]
How much energy must be supplied to the nucleus of lithium isotope Li-7 (3 protons, 4 neutrons) to separate them into individual protons and neutrons? The atomic weight of lithium is $1.1524 \times ...
2
votes
4answers
185 views
The building blocks of energy
I have a couple of related questions that have been bothering me for a while. They might sound unscientific, but here is goes:
What are the building blocks of energy? What does energy consist of? Is ...
3
votes
2answers
203 views
Can a neutron be created from pure energy
Is it possible to create a neutron out of pure energy, i.e. not by bringing a bunch of already-existing quarks together? (A quick calculation using E = mc2 shows the energy required would be about 1.5 ...
3
votes
3answers
187 views
What is “A” in AGeV?
AGeV means GeV per nucleon. But why A letter is used for such a short cut? Why not NGeV, for example?
1
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0answers
54 views
Energy efficiency of antimatter producion [duplicate]
Possible Duplicate:
Matter - Antimatter Reactory Practicality
Certain reactions in particle accelerators lead to production of antimatter, which can then be collected in noticeable ...
1
vote
2answers
117 views
Matter - Antimatter Reactory Practicality
With current technology, would the energy released by a matter-antimatter annihilation be more than the energy needed to created the antimatter in the first place? Would it be worth it? Just curious, ...
0
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1answer
196 views
What is the total kinetic energy per second of the particles accelerated by the LHC
Related: how many protons per second can the LHC accelerate?
2
votes
1answer
192 views
What is meant by the rest energy of non-composite particle?
When talking about the rest energy of a composite particle such as a proton, part of the rest energy is accounted for by the internal kinetic energy of its constituent quarks. But what is physically ...
5
votes
3answers
588 views
Kinetic Energy vs. Potential energy with regards to creating particles
So I know that when you collide particles with high enough kinetic energy, (kinetic energy = at least the rest mass of the particles you are making), you get particles.
How come potential energy ...
4
votes
3answers
368 views
Cosmic ray hazards
The Pierre Auger Observatory site mentions the detection of a 3E20 eV (48 J) cosmic ray whose energy, well above the GZK cutoff, was based on an analysis of its atmospheric shower. This was equivalent ...
