General discussions about "science" itself
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Eh, attention bait. The "dark spot" is not moving, even ignoring the fact that the dark spot is not a "thing".
It's more like when people at a stadium do a "wave" by raising their hands in a specific order. If everyone raises their hands at the same time, did the wave just move faster than light? No, obviously not, because nothing was moving (laterally) in the first place.
It only looks like it's moving because human brains interpret it as movement, much like an animation.
Might be cool for material sciences, but I want to emphazise this sentence:
Importantly, these vortices don’t carry mass, energy or information, so they don’t violate Einstein’s rules, according to the researchers. “Phase singularities do not carry energy or information and thus can ‘move’ superluminally without breaking causality,”
That phase veolcity and the speed of shadows can be faster than light is long established.
Kind of sounds like, due to these optical vertices, we might be able to make an anti-flashlight?
Darklight? Check
Flashlight? Check
Fleshlight? ( ͡° ͜ʖ ͡°) Check.
Nightwing? Cheek.
Darkwing? Check.
Flashlight? ( ͡° ͜ʖ ͡°) Check.
Darkness is an absence, not a substance. In order for that to work you'd need to be projecting some kind of darkness particles or negative energy and that breaks the laws of physics.
Not quite, based on the article, opposing waveforms cancel each other out, which is what causes the optical vorticies they discussed in the article. I'm being mostly facetious, but the article makes it sound theoretically plausible.