Premium Only Content

Liquid Ping Pong in Space | EcoSciTech
Liquid Ping Pong in Space
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). Learn more and follow along with the one-year mission online or using #YearInSpace http://www.nasa.gov/oneyear Read more on 4K in space:
-
1:32:31
Redacted News
3 hours agoEMERGENCY BROADCAST! IS THIS WORLD WAR 3? U.S. PREPS FOR MASSIVE RETALIATION, KINGS DAY FALSE FLAGS
102K289 -
1:05:15
vivafrei
5 hours agoDemocrats Latest Political Stunt! Gavin Newsom's Premature Victory Lap! Rick Wilson is a POS & MORE!
60.7K41 -
2:01:14
Pop Culture Crisis
3 hours agoBonnie Blue BANNED, Tradwife Nara Smith BULLIED, Actress FAKES Brain Cancer?! | Ep. 856
27.5K2 -
LIVE
Akademiks
5 hours agoDiddy Trial Day 23: Kanye West Shows up to Support DIDDY n CONFRONT JANE DOE Day 5/30
1,736 watching -
11:35
Silver Dragons
2 hours agoGold Price SOARING & Fort Knox Gold Audit IMPENDING
11.6K2 -
59:56
Crypto Power Hour
11 hours ago $0.68 earnedCrypto Trading With GROK
26.4K3 -
1:14:30
Jeff Ahern
3 hours ago $0.91 earnedFriday Freak Out with Jeff Ahern
23.6K5 -
15:17
Russell Brand
4 hours agoIt's about time...
61.5K95 -
StoneMountain64
5 hours agoPUBG is truly INCREDIBLE
61.7K4 -
LIVE
Spartan
4 hours agoPro Halo Player | Scrims vs FaZe @ 3 EST then Ranked and/or SWTOR
27 watching