Electrons.
JJ Thomson discovered electrons using a cathode ray tube.
This refers to when electromagnets were used rather than electrostatics to direct electron flow in a CRT (Cathode Ray Tube). Coils would be placed around the neck of the tube to influence the deflection of the cathode ray (electron flow) to the screen.
A "CRT" is a cathode ray tube. An old style computer monitor (not computer).
because cathode ray tube is the heart of the television.
The cathode ray tube was invented in 1897 by Ferdinand Braun.
The electron had already been discovered. It took little imagination to "see" that the cathode ray was the beam of electrons that originated from the cathode. And the beam was controlled using techniques based directly on what was correctly understood about the electron. The cathode ray could only be an electron beam generated at the cathode. Conventional elctric current flow is usually thought of as flowing from positive to negative, but at the quantum level; due to electrons having a negative charge; technically they really flow from negative to positive, and this is apparent in the cathode ray tube. Its the negatively charged electrons that glow in a cathode ray tube, and do so from the negative terminal, or cathode, hence the name.
J.J Thomson conducted the cathode-ray tube experiment in 1911.
Cathode ray tube amusement device happened in 1947.
A cathode ray tube (CRT) emits light when electrons strike the front of the glass tube that is covered in a phosphor coating. The front of the tube is the anode of the tube. The electrons are fired from the rear of the tube by an electrode called the cathode. The electrons are formed into a beam or ray, hence the name of cathode ray tube. Although the electrons travel from the rear of the tube to the front, or from the cathode to the anode, conventional current actually flows the opposite direction. So, the current, as measured in amps will flow from the anode to the cathode.
None of these appliances use a cathode ray tube. Older type TVs used a cathode ray tube, its common name was the picture tube.
Cathode ray tube amusement device was created in 1947.
The cathode ray tube was not discovered it was invented by Ferdinand Braun