4 ms·
> 10GHz, light travels approximately 3cm between each period of the clock Light doesn't change speed, so this statement confuses me.
by bhouston 10y ago
> 10GHz, light travels approximately 3cm between each period of the clock
Light doesn't change speed, so this statement confuses me.
- chriswarbo 10y ago10GHz is the clock frequency, not the light frequency ;)
- acomar 10y agoThe frequency is what's changing. How far does light travel in 1/10,000,000,000 of a second?
- deleted 10y ago[deleted]
- mbell 10y ago> Light doesn't change speed, so this statement confuses me. Practically speaking, it does change speed. The speed of light in a vacuum is fixed, but it varies based on what it's traveling through. The propagation velocity of an EM signal in RG coax cable is 80% of c*, PCB traces can be as low as 50% and somewhat surprisingly both fiber optic cable and cat6 cable are about the same, ~60-70%. I don't know if there is any good public information about the velocity factor with modern CPU transmission lines.
- deleted 10y ago[deleted]