Get smart curated videos delivered to your inbox.   SUBSCRIBE
The Kid Should See This

Argonne National Laboratory: Acoustic levitation

Watch more with these video collections:

From Argonne Labs comes this intriguing video demonstrating the acoustic levitation of liquids on a piece of equipment developed for NASA to simulate microgravity conditions.

“The acoustic levitator uses two small speakers to generate sound waves at frequencies slightly above the audible range – roughly 22 kilohertz. When the top and bottom speakers are precisely aligned, they create two sets of sound waves that perfectly interfere with each other, setting up a phenomenon known as a standing wave.

At certain points along a standing wave, known as nodes, there is no net transfer of energy at all. Because the acoustic pressure from the sound waves is sufficient to cancel the effect of gravity, light objects are able to levitate when placed at the nodes.”

From Scientific American, via It’s Okay to Be Smart.

This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.

Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.

🌈 Watch these videos next...

What’s that, Buzz? Sounds of the Hardware Store

Rion Nakaya

What is the Slinky Drop? Watch in slow motion…

Rion Nakaya

What happens inside an artificial gravity lab?

Rion Nakaya

What does a Tibetan Singing Bowl sound like?

Rion Nakaya

Using Gravity to Paint: Holton Rower & Amy Shackleton

Rion Nakaya

Use a 9-volt battery to break water into its elemental components

Rion Nakaya

To the Scientists of the Future: Materials science with EUPHRATES

Rion Nakaya

The surprising interactions between copper and neodymium magnets

Rion Nakaya

The Science of Hearing

Rion Nakaya