Bubbling air through sand can cause it to act like a liquid. Dianna Cowern and William Osman try to reproduce this popular GIF on Physics Girl.
Check out William Osman: https://www.youtube.com/channel/UCfMJ2MchTSW2kWaT0kK94Yw
Thanks to Udacity for supporting PBS Digital Studios. For a limited-time discount, go to Udacity.com/physics-girl.
The glass beads used in place of beach sand were called "Multipurpose abrasive blasting media, Glass Beads." We bought 60-120 and 70-140 Mesh Size and ended up using the larger diameter beads.
Creator: Dianna Cowern
Editing: Jabril Ashe
Animations: Kyle Norby
Thanks to William, John, and Kyle Kitzmiller
PO Box 9281
San Diego, CA 92169
Music: APM and YouTube
“On the Bach”