How Water Behaves in Space 4 K | Moving Water in Space | Universe Study |

#nature #naturelovers #water Credit goes to NASA #discovery #discoverychannel #discoveryineducation #pingpong #universe #study
#water in #space behaves… differently. #surface #tension and #capillaryaction flow can be #harnessed to move fluids in more efficient ways. What looks like fun could actually help us improve systems for moving fluids in #microgravity , in things like fuel tanks for space travel
#nasa #astronaut Scott Kelly, who marked day 300 of a historic year in space on Jan. 21, 2016, shows off another #fascinatingcollections 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 #paddleshifter 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 #roughnessoflife and non-wettability produce a super-hydrophobic surface capable of preventing water #adhésion 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)