As it's written on the tin. Let's say you have a human or a human sized object. How fast do they have to move to appear completely invisible to the human eye? No shadow. No blur. Nothing. I'll even leave a link to reference what I'm thinking of.
https://www.youtube.com/watch?v=wIHLwBtMiYI
Notice how the woman would suddenly disappear for a few seconds then we get a flurry of sparks then she'd reappear. She's supposedly running around swinging her sword during that time but is moving so fast she's completely invisible.
So how fast does she have to move? I look it up online and ppl are giving answers from a subsonic velocity to FTL.
https://www.youtube.com/watch?v=wIHLwBtMiYI
Notice how the woman would suddenly disappear for a few seconds then we get a flurry of sparks then she'd reappear. She's supposedly running around swinging her sword during that time but is moving so fast she's completely invisible.
So how fast does she have to move? I look it up online and ppl are giving answers from a subsonic velocity to FTL.
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