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发表于 2025-3-26 21:23:15
Scope of Clinical Radiotherapy Physicsvoke a reaction among lay people. They may ask whether indeed ”physicist“ and not ”physician“ was meant. Next could come the query, what role does a physicist play in a clinic? The reply is that medical physicists function in those clinics that need their expertise to ensure proper patient care. In
发炎
发表于 2025-3-27 04:18:47
Atoms, Molecules, and Matters could be split into components, each of which has its own distinct chemical behavior. These individual components were given the name ”elements.“ Groups of elements have been identified as alkali, halogens, and inert gases, with elements in each group behaving alike chemically. In 1816, Prout sugg
Junction
发表于 2025-3-27 06:33:20
Propagation of Energy by Electromagnetic Waveser of energy is easily understood. It is less easy to understand how the energy coming from a radio transmitter is sensed by a radio receiver. The propagation of energy, in this case, is through electromagnetic waves that are invisible. The heat we feel when we place our hand near a hot oven is due
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发表于 2025-3-27 12:53:29
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发表于 2025-3-27 14:49:57
Radioactive Decay Calculationswill decay and when. This is because radioactive decay is a random process. Any radionuclide may decay in any given time interval with a certain probability, but not with any certainty. We can only predict the averages for a whole group, without being specific about a particular nuclide. Furthermore
HEW
发表于 2025-3-27 18:15:34
Collision and Radiation Loss in Charged-Particle Interactionsepends on the stopping power of the medium. A light particle such as an electron may follow a zig-zag, tortuous path, changing directions during several energy-diminishing encounters, as illustrated in Figure 6.1. The thickness of the medium needed for the entire energy of a particle to be absorbed
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发表于 2025-3-28 01:53:02
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Pseudoephedrine
发表于 2025-3-28 05:53:12
Conventional X-Ray Machinesed to high electric potentials. They used glass discharge tubes (Figure 8.1) which contained an anode and a cathode, and in which gas was maintained at very low pressures, of the order of 0.001 mmHg. Crookes found that, when very high voltages were applied between the electrodes, the gas turned dark
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发表于 2025-3-28 06:49:14
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发表于 2025-3-28 10:30:02
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