Premium Only Content

Liquid Ping Pong in Space - RED
1,480,031 views 21 Jan 2016 #YearInSpace
NASA astronaut Scott Kelly, who marked day 300 of a historic year in space on Jan. 21, 2016, shows off another fascinating feature of life in microgravity. Kelly used two paddles with hydrophobic, or water repellant, features to pass a sphere of water back and forth. Scientists use the microgravity environment of the space station to advance scientific knowledge in Earth, space, physical, and biological sciences that otherwise wouldn't be possible down here on the planet.
The paddles are polycarbonate laser etched so that the surfaces are actually arrays of 300 micrometer posts (0.3mm). The surfaces were then spray coated with a Teflon coat. The combined effects of surface roughness and non-wettability produce a super-hydrophobic surface capable of preventing water adhesion in dynamic processes. The larger the drop, the less force it takes to break it up. The smaller the drop, the harder you can hit it. Scott is demonstrating about a 4 mL drop (over 100 times larger than a rain drop).
-
17:14
Mrgunsngear
2 hours ago $1.73 earnedUpdate: Current Glocks Discontinued & Glock V Series Is Coming!
1.26K17 -
2:52:54
Barry Cunningham
3 hours agoMUST SEE: PRESIDENT TRUMP NATO PRESSER! AND NEW YORK CITY MAYORAL DEBATE!
18.6K34 -
13:15
Cash Jordan
5 hours ago"INVASION" Mob STRIKES Chicago Jail… FRONTLINE Marines IGNORE Judge, SMASH Illegals
2.34K15 -
LIVE
SpartakusLIVE
2 hours ago#1 Solo Challenge CHAMPION entertains HERDS of NERDS
135 watching -
LIVE
Alex Zedra
1 hour agoLIVE! New Game | DeathWatchers
124 watching -
LIVE
Nikko Ortiz
2 hours agoShotguns With A Magazine... |Rumble Live
76 watching -
23:18
Lady Decade
7 hours agoThe Diversity Lie Gaming Refuses To Talk About
1.1K4 -
LIVE
Geeks + Gamers
2 hours agoGeeks+Gamers Play- MARIO KART WORLD
160 watching -
LIVE
Midnight In The Mountainsâ„¢
5 hours agoGaming w/ Midnight | Studio is BACK and SO ARE WE | 3 AWAY FROM 1,500 WILL YOU GET ME THERE?!
25 watching -
1:51:13
Glenn Greenwald
6 hours agoTucker Carlson Speaks at Turning Point, Prompting Cheers and Controversy; More Evidence of Israeli Atrocities Amid Fragile Ceasefire; Tommy Robinson Submits to Re-Education in Israel | SYSTEM UPDATE #536
95.9K95