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pivoxa15
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Why is the end of the hot filament where negatively charged electrons are being fired called the cathode end. 'cat' in chemistry means positive, I assume the same goes in physics as well?
jtbell said:
hustleberry said:remember thermo ionic emission
hustleberry said:cathode is called cat or positive because it is emitting or "losing electrons" thus making it positive or cat
pivoxa15 said:So that is the main reason. The receiving end is receiving the electrons hence will be made more negative so that end is called the anode.
A cathode ray tube is a type of vacuum tube that was used in older television and computer monitors. It works by using a stream of electrons to create an image on a fluorescent screen.
The positive end of a CRT is the anode, which is a positively charged electrode that attracts the negatively charged electrons emitted from the cathode.
Electrons are emitted from the cathode and accelerated towards the anode by an electric field. As they travel, they pass through a series of focusing and deflecting electrodes, which control the path of the electrons and ultimately create an image on the screen.
CRTs have largely been replaced by newer display technologies such as LCD and LED because they are more energy efficient, produce higher quality images, and are smaller and lighter in size.
There have been concerns about exposure to electromagnetic radiation from CRTs, but studies have found that the levels emitted from CRTs are well below the recommended safety limits. However, prolonged exposure to the flickering image on a CRT may cause eye strain and headaches for some individuals.