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(Source: chipsprites)

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(Source: chipsprites)

Video 15 Sep 56 notes


It was a FUNgi kind of day

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Photo 15 Sep Just in case your dog needs a hood.

Just in case your dog needs a hood.

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by tddwdds
Video 15 Sep 26 notes


Fall mushrooms I
Priest Point Park in Olympia, WA

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Movie Theaters in South India | Stefanie Zoche

Video 15 Sep 795 notes


Jellyfish flames in space


The jellyfish-like light show in the animations above shows the life and death of a flame in microgravity. The work is part of the Flame Extinguishment Experiment 2 (FLEX-2) currently flying aboard the International Space Station.

When ignited, the fuel droplet creates a blue spherical shell of flame about 15 mm in diameter. The spherical shape is typical of flames in microgravity; on Earth, flames are shaped like teardrops due to the effects of buoyancy, which exists only in a gravitational field.

The bright yellow spots and streaks that appear after ignition are soot, which consists mainly of hot-burning carbon. The uneven distribution of soot is what causes the pulsating bursts seen in the middle animation. When soot products drift back onto the fuel droplet, it causes uneven burning and flame pulses. The final burst of flame in the last animation is the soot igniting and extinguishing the flame.

Fires are a major hazard in microgravity, where oxygen supplies are limited and evacuating is not always an option. Scientists hope that experiments like FLEX-2 will shed light on how fires spread and can be fought aboard spacecraft. For more, check out NASA’s ScienceCast on microgravity flames. (Image credits: NASA, source video; submitted by jshoer)

The lead researcher on the project is UC San Diego’s Forman Williams and has been studying combustion physics for decades.  He explains:

"Combustion in microgravity is both strange and wonderful. We first saw these disruptive burning events in labs and microgravity drop towers more than 40 years ago. The space station is great because the orbiting lab allows us to study them in great detail."

Read more about his experiment here.

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Photo 15 Sep 118 notes thumbtacklily:

sept. 14 these mushrooms are growing ridiculously fast


sept. 14
these mushrooms are growing ridiculously fast

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