What 50hz means?

Related questions

1. Whats better 60hz or 120hz?
2. Is curved TV better than flat?
3. What is a good refresh rate for a 4k TV?
4. Does 1080p look bad on 4k TV?
5. Why India has 230v 50hz?
6. Who invented OLED?
7. Is 60hz or 120hz better?
8. What is 220v 50hz?
9. What is the highest refresh rate on a TV?
10. What is processing rate on tv?

Tags

1. #process
2. #cycles
3. #changes
4. #times
5. #means
6. #current
7. #motor
8. #forth
9. #voltage
10. #direction
11. #positive
12. #rotor
13. #second
14. #turns
15. #negative
16. #generator
17. #converts