Easy. Bridge loop. -mel via cell
On Jul 21, 2024, at 4:06 PM, Josh Luthman <j...@imaginenetworksllc.com> wrote: Mel, Voyager is using radio waves, which travel faster than the speed of light (in a vacuum, too!). But my point is more Earth to outside the solar system is ~24 hours so where did circumnavigating the globe get three days of latency? On Sun, Jul 21, 2024 at 2:29 PM Mel Beckman <m...@beckman.org<mailto:m...@beckman.org>> wrote: Chris, Of course I do. -mel > On Jul 21, 2024, at 8:55 AM, Chris Adams > <c...@cmadams.net<mailto:c...@cmadams.net>> wrote: > > Once upon a time, Mel Beckman <m...@beckman.org<mailto:m...@beckman.org>> > said: >> Because the speed of light is different in different mediums. It depends on >> the index of refraction. Most of the Internet is on fiber optics, and the >> speed of light in glass fiber is dramatically slower than in a vacuum. Long >> distance single-mode communication fiber typically has a core index of >> refraction of 1.4682 at 1550nm (mid-C-band). So the speed of light in this >> type of fiber is the speed of light in a vacuum 299,792,458 m/s divided by >> 1.4682 = 204,190,477 m/s. You have to add to that the latency of any optical >> to electrical transformations, which happens in most every router or switch. >> Three days is probably an underestimate. > > Uh, you do know that Voyager isn't unspooling fiber as it goes, right? > > -- > Chris Adams <c...@cmadams.net<mailto:c...@cmadams.net>>
