Physicists make laser beams visible in vacuum

ScienceDaily
Aug 25, 2021, 2:30 pm173 pts
A beam of light can only be seen when it hits matter particles and is scattered or reflected by them. In a vacuum, however, it is invisible. Physicists have now developed a method that allows laser beams to be visualized even under these conditions. The method makes it easier to perform the ultra-precise laser…

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