| − | '''Bremsstrahlung''' are X-rays produced when fast [[electron]]s pass through matter. The bremsstrahlung (German for "slowing-down radiation") energy varies from 0 to the energy of the electron. | + | '''Bremsstrahlung''' are [[X-ray]]s produced when fast [[electron]]s pass through matter. The bremsstrahlung (German for "slowing-down radiation") energy varies from 0 to the energy of the electron. |