| ▲ | Razengan 6 hours ago | |
> speed of light in a fiber optic is only ~2/3rds of speed of light in a vacuum That made me wonder: Why can't we use vacuum cables? (the sort of questions I should probably be bothering an LLM with.. someone should make a LMGPTTFY) | ||
| ▲ | joha4270 5 hours ago | parent | next [-] | |
If you figure out how to make cheap vacuum cables you will probably become very rich. But otherwise chains of microwave links does get much closer to c in applications where you want absolute lowest latency (or much more commonly, when digging a fiber line is too expensive) | ||
| ▲ | pkaye 3 hours ago | parent | prev | next [-] | |
Not vacuum but an inert gas: https://www.thefoa.org/tech/ref/fiber/Hollow-core-fiber.html | ||
| ▲ | LoganDark 5 hours ago | parent | prev [-] | |
> Why can't we use vacuum cables? Hollow-core fiber is basically this! > LMGPTTFY "let me go prompt that for you" or "let me GPT that for you"? | ||