- To display waveform of waves
- To measure the potential difference
- To measure short time interval
- To test electronic equipments
A voltage applied to the x-plates can pull the electron beam side to side (along the x-axis), and a voltage applied to the y-plates can pull the electron beam up and down (along the y-axis). Vacuum inside the CRO tube is to allow electrons to move freely.
How we produce a colour TV?