On bringing a magnetic compass near a television? Does it make a difference if the television is turned off
Answers
Answer: yes when you bringing a magenetic compass near a television it make difference if the television is turnes off because when television is on so it connect to sattellite and when it is off it doesnt connect with satelllite or it has another reason also like Beams of electrons are emitted from the -ve electrode which is also known as the cathode so the beams are also known as cathode rays. 'Tube' is just a contraction of vacuum tube, as the whole of the TV has to have the air pumped out to stop it interfering with the electron beam. Valves which are also a form of vacuum tube were fundamental to the first forms of electronics in the beginning of the 20th century because you can interfere with the progress of electron beams by applying electric and magnetic fields, so you can use them to amplify signals and other cunning things. So valves were used to amplify the radio signals in both radios and TVs before transistors were invented.
If it is a CRT type color television, in the middle portion, it can get magnetized and give wrong color patch. It will go away after switching on and off as it has built in magnetic eraser.