Fluidized sand bed by means of air
(17)With the air pouring from specific points under a layer of sand, It happens a very interesting and entertaining phenomenon. The bed is fluidized, and sand behaves like a liquid. Liquid layers of sand used in the industry […]
With a GoPro camera in space
Astronaut NASA Randy Bresnik recorded this video with GoPro camera on October 20, 2017 during a spacewalk outside the International Space Station. The Bresnik wrote this […]