Mon Nov 18 01:27:10 2024
(*097dfbf6*):: https://scitechdaily.com/lasers-that-cast-shadows-physics-takes-a-surprising-turn/ +public!
If this is possible, it should work with sound too. You could probably create an invisible acoustic boundary with a 2D mesh of acoustic lasers that bounces signals back, isolating sound for music festival stages
*** Lasers That Cast Shadows? Physics Takes a Surprising Turn
*** Laser beams have been shown to cast shadows, defying previous notions that light cannot block light. This phenomenon, demonstrated using ruby crystals and special laser settings, opens up potential uses in advanced light control and optical switching devices. Can light cast a shadow? It may sound
*** SciTechDaily
(*097dfbf6*):: https://physics.aps.org/articles/v6/32
*** Lasers of Pure Sound
*** Phonon lasing—coherent amplification of phonons by stimulated emission—has been achieved in a purely acoustic analog of a three-level laser scheme.
*** Physics
