Katodisäteilyä
Katodisäteilyä, also known as cathode rays, refers to a stream of electrons emitted from the cathode of a vacuum tube. These rays are negatively charged particles and were crucial in early experiments that led to the discovery of the electron. When a high voltage is applied across electrodes in a vacuum or a low-pressure gas, the cathode emits electrons, which then travel towards the anode.
The properties of cathode rays were systematically studied by physicists in the late 19th century. It was
Cathode rays were instrumental in the development of early electronic devices such as the cathode ray tube