Posts in the “science” category

Coffee, cream, and static electricity

Back in 2013 I was staying in a hotel in New Mexico, put a coffee cup next to the tv, started pouring cream, and static electricity pulled the cream into the tv. Cool.

NASA’s Curiosity Rover “spots clouds shaped by gravity waves”

From this story on sciencemag.org:

“NASA’s Curiosity rover usually keeps its instruments firmly focused on Mars’s ground, zapping grit with its laser or drilling cores in bedrock. But every few days, the SUV-sized robot, like any good dreamer, shifts its sights upward to the clouds. Well into its fifth year, the rover has now shot more than 500 movies of the clouds above it, including the first ground-based view of martian clouds shaped by gravity waves ...”

(See the story for more information, and some animations which unfortunately just keep endlessly repeating.)

NASA’s new High Dynamic Camera records rocket test

From the video notes: “This is footage of Orbital ATK’s QM-2 solid rocket booster test taken by NASA’s High Dynamic Range Stereo X (HiDyRS-X) camera. HiDyRS-X records high speed, high dynamic range footage in multiple exposures simultaneously for use in analyzing rocket engine tests. Traditional high speed video cameras are limited to shooting in one exposure at a time, but HiDyRS-X can record multiple high speed video exposures at once, combining them into a high dynamic range video that adequately exposes all areas of the video image for comprehensive analysis.”

The video doesn’t change much over the three minutes, so if you watch a few seconds of it you can see how it works. As an aerospace engineer who was most interested in propulsion, watching the rocket plume is cool.