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Quantum experiment demonstrates that light can exit a material before ever entering

Physicists in Toronto observe quantum “negative time”: a pulse of light appears to leave before entering atoms.
Digital Camera World on MSN

Laowa 200mm f/2 AF FF review: it goes up against some big hitters in a (relatively ...

The Laowa 200mm f/2 AF FF combines powerful telephoto reach and a fast aperture with a comparatively lightweight yet ...