2 ms·
Here is my prediction. If the speed of light were 5 km/s, it would be slower than the speed of sound; consequently, the sound would reach me much faster than th
by ama4efaria 24d ago
Here is my prediction.
If the speed of light were 5 km/s, it would be slower than the speed of sound; consequently, the sound would reach me much faster than the visual image.
For instance, if I were surrounded by ten people and one of them clapped, I would hear the sound first and only realize who had clapped quite a while later.
- jawilson2 24d agoSound is a wave that travels through some medium, which also cannot be faster than light. You can't have FTL information transfer.
- bell-cot 24d agoActually, all the [physics stuff] that allows sound to propagate would also be slowed down, to <5 km/h. More realistically - the atmosphere would not be gaseous (everybody dies), the sun would be a black hole larger than the earth's orbit (everybody dies), and quite a few other problems.
- moring 24d agoDidn't even think of this, but yes: 5km/h ~ 1m/s, which is 1/10^8 the real c. This multiplies the sun's Schwarzschild radius (normally ca. 3km according to Wikipedia) by 10^16, making it 310^13 km, with 1AU = 15010^6 km. It's yet another xkcd-level apocalypse.
- bell-cot 24d agoSadly, Google's AI search can find no hint of St. Randall working on a What If? 3 book. (But What If he's sworn it to secrecy?;)
- throwawaysoxjje 24d agoYou don’t have to go that far: Earth itself would be a black hole