4 ms·
You could change the event ordering by forcing some events to take a longer path through space? For a real world example, we can predict supernovas because we'
by 8note 6y ago
You could change the event ordering by forcing some events to take a longer path through space?
For a real world example, we can predict supernovas because we've already seen them from another trajectory of light: https://youtu.be/ljoeOLuX6Z4 https://youtu.be/ljoeOLuX6Z4 so we can both see the remote event before and after local events
- javert 6y agoRelative to a clock on earth, moving at a given speed relative to the speed of light, the supernova happened when it happened. All that is changing with lensing is that you're seeing the light coming from it earlier looking in one direction than another. Either way, it happened in the past. The order of events is not changing. It's like saying that a stock trader using a fiber connection figures out about a price movement more quickly than a stock trader using a dial-up connection. At least, I think that's right; not a physicist.