| ▲ | Jimmc414 a day ago | |||||||
Explanation https://www.popularmechanics.com/science/a70885429/darkness-... | ||||||||
| ▲ | perilunar 19 hours ago | parent | next [-] | |||||||
Can someone more knowledgeable explain this better please? I have questions: - if you can measure the 'optical singularities' travelling FTL, then surely 'information' is travelling FTL? - does it matter (i.e. violate relativity) if something is travelling faster than light speed in some medium as long as it doesn't travel faster than light in vacuum? | ||||||||
| ▲ | rienbdj a day ago | parent | prev [-] | |||||||
Something massless and devoid of information can travel faster than light How can such a thing be detected? And without detection how can speed be measured? | ||||||||
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