强烈的愿望
发表于 2025-3-21 16:13:39
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GAVEL
发表于 2025-3-21 23:51:19
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HUMP
发表于 2025-3-22 01:11:24
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殖民地
发表于 2025-3-22 07:30:19
Cyclotron Line Emission>The force acting on a charge . moving non-relativistically with a velocity . of magnitude v in a uniform magnetic field . is the Lorentz force.
Mundane
发表于 2025-3-22 12:29:00
Synchrotron EmissionOne speaks of cyclotron radiation when the electrons moving in a magnetic field are not relativistic, and of synchrotron radiation when the particle energies are relativistic.
dura-mater
发表于 2025-3-22 15:43:53
Pair ProcessesA further form of interaction between photons and electrons is the creation and annihilation of electron–positron pairs. These processes are important at energies above the electron rest mass of 511 keV.
意见一致
发表于 2025-3-22 19:00:17
Particle AccelerationWe have seen in the discussion of synchrotron radiation that there are high energy electrons in different environments in nature. One also knows since the beginning of the twentieth century that there is a “penetrating” radiation that comes from outer space and that is measurable on the ground.
细查
发表于 2025-3-22 21:55:51
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offense
发表于 2025-3-23 04:02:19
Black Holes and Accretion EfficiencyIn general relativity one does not discuss a gravitational field, but one considers instead the way in which matter influences the geometry of space-time. Geometry is described by a metric, the way of measuring distances between two events in space-time.
灰心丧气
发表于 2025-3-23 07:58:28
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