Videopost: supersonic tennis ball, AK-47 and hummingbirds
All with Friday! We have accumulated the second compilation of the various amazing videos. If you missed the first, we recommend available . Today we mainly crept video about these or other forms of physical strength and properties. And, of course, science and technology, too, did not remain deprived.
High-speed shooting and ball collision table tennis rackets. The ball has a supersonic velocity
Do not know about you, but we were stunned twice. The first time the ball (the ball ping-pong!) Broke a racquet, the second time - when he broke it all to hell. This is despite the negligible mass.
Looks like a shot from an AK-47 under water < br />
Amazingly beautiful and unusual shape trace. Pay attention to the distance traveled by the bullet, and its behavior in the final stage. So if you happen to see an Indian fighter (which in itself is a small tragedy), where the main character will shoot under water and mow down hordes of enemies, you will not believe it. While Bollywood remove such masterpieces that there is some underwater shooting looks like pale mole on their bright background.
At the same time here is a selection of high-speed shooting underwater shots with different cartridges with bullets, also very curious spectacle. You can start watching from 1 minute:
Sand and sound vibrations
A fascinating spectacle, as the sand is distributed on a metal surface. It's very simple, but it is rare to find such a visual confirmation of certain physical phenomena. If more drive such a stand in sound dampening box with transparent cover, would be very original kimatichesky coffee table. It is a pity not to hang on the wall.
Sky over Nebraska
Taymleps video cloud cover over the city of Lincoln, Nebraska. Even seeing pieces of buildings, it is not hard to believe that it is "only" the cloud.