A host of medical imaging techniques employ nuclear radiation. What makes nuclear radiation so useful? First, γγ radiation can easily penetrate tissue; hence, it is a useful probe to monitor conditi...A host of medical imaging techniques employ nuclear radiation. What makes nuclear radiation so useful? First, γγ radiation can easily penetrate tissue; hence, it is a useful probe to monitor conditions inside the body. Second, nuclear radiation depends on the nuclide and not on the chemical compound it is in, so that a radioactive nuclide can be put into a compound designed for specific purposes.
We now know the relativistic expression for kinetic energy in the limiting case of an ultrarelativistic particle: its energy is proportional to the “stretch factor” D of the Lorentz transformation. ...We now know the relativistic expression for kinetic energy in the limiting case of an ultrarelativistic particle: its energy is proportional to the “stretch factor” D of the Lorentz transformation. What about intermediate cases?
