Introduction To Radiation Detectors by Christopher Miller
Since we cannot see, smell or taste radiation, we are dependent on instruments to indicate the presence of ionizing radiation. Radiation is energy traveling in the form of particles or waves in bundles of energy called photons. Some everyday examples are microwaves used to cook food, radio waves... At this point the electrons are collected by an anode at the end of the tube forming an electronic pulse. ... The sequence continues until the last dynode is reached, where the electron pulse is now millions of times larger then it was at the beginning of the tube.