To reduce the strength of incoming gamma rays by a billion, you need 13.8 feet (4.2 meters) of water, 6.6 feet (2 m) of concrete or 1.3 feet (0.39 m) of lead, according to the radiation protection ...

When alpha, beta, or gamma rays pass through the gas in the tube, it can ionize an atom and create a free electron. This electron is then attracted to the positive voltage of the central wire.

Such unstable atoms are called “radioactive atoms”. When radioactive atoms decay, they release energy in the form of ionizing radiation (for example alpha particles, beta particles, gamma rays or ...

Alpha particles, beta particles and gamma waves are the three most common types of nuclear radiation. is not as dangerous if the radioactive source is outside the body, because it cannot pass ...

Gamma radiation does not consist of particles but as short wavelength, high energy electromagnetic radiation emitted from unstable nuclei. It is normally emitted alongside alpha or beta radiation.

Uranium ore that miners dig up is relatively harmless. But it contains tiny amounts of a rare radioactive isotope, Uranium ...

Keywords Wilhelm Röntgen, X-rays, cathode rays, fluorescence, Henri Becquerel, uranium, radioactivity, Marie Curie, polonium, radium, Ernest Rutherford, alpha rays, beta rays, gamma rays ...