Researchers observed a laser beam casting a visible shadow, a first in optics.

Researchers from the University of Ottawa have observed a laser beam casting a visible shadow, a phenomenon previously unseen. By shining a green laser through a ruby crystal illuminated by blue light, a shadow was formed, demonstrating that light can block other light under specific conditions. This discovery could lead to advancements in optical switching, fabrication, and imaging technologies.

4 months ago
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