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Researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow, opening new possibilities for technologies that could use a laser beam to control ...

2. Classify the objects or materials given below as opaque, transparent or translucent, luminous or non-luminous: Air, water, piece of rock, sheet of aluminium, mirror, wooden board, sheet of ...

For the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue illuminating ...

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(Nanowerk News) Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain conditions, a laser beam can act like an opaque object and cast ...