Ultrasound makes sonoluminescent bubbles

What you're seeing is the rarely-observed phenomenon of sonoluminscence. Gas bubbles are collapsing, and part of the energy of their collapse is being translated into visible light. Here's how it happens! » 2/08/13 8:20am 2/08/13 8:20am

Sonoluminescence: When sound makes light

Under certain circumstances, sound waves can generate light. Find out which circumstances, explore the debate about how the phenomenon works, and learn how to make your own sonoluminescence generator. » 6/04/10 6:40am 6/04/10 6:40am