Physicists Create Time-Reversed Waves of Optical Light

Re:Physicists Create Time-Reversed Waves of Optical Light by keymone on Friday December 18, 2020 @06:35AM (#25466109)

And if the concept described in the article is valid, how do you differentiate between plain and “time-reversed” version of those waves?

Length compression and other relativistic effects, as I understand relate to those properties measured in time. How does that manifest when we’re talking about a static snapshot?

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Re:Physicists Create Time-Reversed Waves of Optical Light by mrec on Friday December 18, 2020 @06:51AM (#25466201)

I don't pretend to have much of a grasp of what the article is describing, but it sounds very "frictionless spherical cow in a vacuum". I'd be amazed if this technique could be applied to something as messy as turbulence.

For lengthwise compression I didn't mean anything as abstruse as relativistic effects, just normal physical compression. If you accelerate something by pushing on the back of it, it's going to squish to some extent.

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