Discover Top Posts Tagged with #schlieren imaging

From National Geographic Week’s Best Space Pictures; October 9, 2015:

1) Glare and Blare NASA

With the sun as their backdrop, NASA scientists used special imaging techniques to reveal a T-38 jet’s sonic boom. The splotches on the sun, shown in purple, are sunspots—cooler, more magnetically active patches of its surface.

2) Raise a Glass NASA

Apollo 12 astronaut Alan Bean holds up a sample container as crewmate Charles Conrad, Jr. snaps a photo. Most of the Apollo astronauts’ photos were taken with custom cameras like the one mounted to Bean’s chest.

3) Cosmic Neighborhood ESO/DIGITIZED SKY SURVEY 2

The star systems surrounding AU Microscopii, a red dwarf some 32 light-years from our solar system and about half the sun’s mass. Scientists recently found surprise "ripples" moving through a debris disk orbiting the star.

4) Purple Haze NASA/JHUAPL/SWRI

Pluto’s high-altitude haze glows a ghostly blue-purple, as captured by NASA’s New Horizons. The shroud is likely composed of soot-like particles called tholins, which form when solar radiation bombards nitrogen and methane.

5) Do You Want to Build a Comet? ESA/ROSETTA/MPS FOR OSIRIS TEAM

The icy southern regions of Comet 67P/Churyumov-Gerasimenko. The duck-shaped comet’s two distinct lobes were once individual comets that slowly collided into each other.

6) Defrosting NASA, EARTH OBSERVATORY

First-year sea ice melts in the Bellingshausen Sea, off of Antarctica’s west coast, on November 5, 2014. Research has shown that globally,the amount of sea ice keeps decreasing, even as Antarctic sea ice hits record sea coverage.

7) Bring Him Home—From Here NASA/JPL-CALTECH/UNIV. OF ARIZONA

The sun hangs low over Mars’ Acidalia Planitia, the landing site of the mission in the book and film “The Martian.” In real life, settling here would be tricky. The region is littered with boulders and steep slopes.

8) Apollo’s Final Earthrise NASA

A crescent Earth rises over Ritz Crater, as captured by Apollo 17 astronaut Ronald Evans. This, and thousands of other pictures, are in the new Project Apollo Archive.

Stanford Scientists used a high-speed video camera and Schlieren imaging technique to capture the turbulence of hot gases from a lit match.

Richard Feynman's once called 'turbulence the most important unsolved problem of classical physics.'

Learn more about Schlieren imaging here.

#fire #schlieren imaging #turbulence #richard feynman #science #technology #high-speed video