Now Science Officer Smith can properly mod the spaceship's PS3/XBOX2/etc. for the long trip to Mars.
Water in a frypan can be similar
by
Ratso+Baggins
·
· Score: 3, Informative
Put a teaspoon of water into a well heated frypan and the water (while it is still a liquid) will generally form up in little blobs and behaves in a similar fashion. ie. moving in a circular motion.
--
-- "we live in a post-ideological world..." - Billy Bragg.
Re:Water in a frypan can be similar
by
Anonymous Coward
·
· Score: 3, Informative
When it starts to do this, then it's ready for the pancake batter.
Re:Water in a frypan can be similar
by
delus10n0
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· Score: 4, Informative
I don't think that is the same thing.. what you're describing is the Leidenfrost effect.
-- Not All Who Wander Are Lost
Firemarshall Bill sez
by
Tumbleweed
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· Score: 4, Funny
"Lemme SHOWYASOMETHIN'!
Let's say, kids, that you're in space, doing all those amaaaaaazing astronaut duties, like, say, performing a SOLDERING EXPERIMENT!
There you are, performing your scientific experiments on soldering in space, with SUPERHOTSOLDER! Suddenly, your astronaut compatriot, who had the little spaceman's mexican meal packet, farts REALLY POWERFULLY in your direction, distracting your attention, and the SUPERHOTSOLDER goes right into yours eyes, blinding you for life!
Be careful up there, kids - space is dangerous and full of monsters and SUPERHOTSOLDER!"
Why it spins.
by
CryptoEngineer
·
· Score: 5, Interesting
As to why the rosin separates from the solder, I don't know. But I think I know why it spins.
Heat is being conducted into the rosin ball from the molten solder. The rosin is boiling or vaporising. Initially, this is symettric, but if only a small jiggle occurs, one side of the blob gets cooled by the air, and starts to vaporize at a lower rate. The other, trailing side vaporizes at a higher rate, and in reaction of the ball experiences a push from that side. The movement increases the cooling effect on the upwind side, and the process feeds on itself. Since the rosin blob touches only the liquid solder, there is little or no friction , and these tiny effects can build up.
The astronaut was lucky the rosin ball didn't come right off and hit him in the eye.
Re:Why it spins.
by
RobertB-DC
·
· Score: 4, Interesting
The astronaut was lucky the rosin ball didn't come right off and hit him in the eye.
I noticed, though, that the smoke from the heated ball of solder and rosin was clearly "rising" away from the astronaut. I'm guessing that they were using a fan or something similar to blow gases away. I'd be curious to know what happens when you melt this sort of solder without a breeze -- I'll have to google "zero gee flame" to see what the latest combustion experiments have yielded.
Also interesting... at 0:43 or so (in the Windows Media version), it looks like the guy holding the fan got distracted as the rosin bubble started spinning. The smoke starts moving in other directions, and a small chunk of... something... goes flying off to the upper right of the frame. Wonder what that was?
-- Stressed? Me?
Of course not.
Stress is what a rubber band feels before it breaks, silly.
Re:Why it spins.
by
shfted!
·
· Score: 3, Informative
You need a forced ventilation system in space, as microgravity and a confined space doesn't create enough of a gradiant to properly mix and balance the various gases in the air (like oxygen). So yes, they have fans.
-- He who laughs last is stuck in a time dilation bubble.
Re:Yes but what about the ants?
by
AKAImBatman
·
· Score: 3, Interesting
Believe it or not, this type of thing could be very useful to know. Sure, it's just a simple solder now, but what about other melted metals? For example, take 3D printing. Gravity tends to limit the types of shapes you can make, and the materials you can use. But what if we could 3D print steel? We could build a spaceship in record time! All we'd need are some "printer" robots and CAD software to control them!
Slashdot Mirror
heh wouldn't want to have to do emergency circuit board soldering in space if thats the way it acts, it could be alot of fun
"WebTV: bringing the Internet into the shallow end of the gene pool since 1995" - Martin Bishop
Now Science Officer Smith can properly mod the spaceship's PS3/XBOX2/etc. for the long trip to Mars.
Put a teaspoon of water into a well heated frypan and the water (while it is still a liquid) will generally form up in little blobs and behaves in a similar fashion. ie. moving in a circular motion.
--
"we live in a post-ideological world..." - Billy Bragg.
"Lemme SHOWYASOMETHIN'!
Let's say, kids, that you're in space, doing all those amaaaaaazing astronaut duties, like, say, performing a SOLDERING EXPERIMENT!
There you are, performing your scientific experiments on soldering in space, with SUPERHOTSOLDER! Suddenly, your astronaut compatriot, who had the little spaceman's mexican meal packet, farts REALLY POWERFULLY in your direction, distracting your attention, and the SUPERHOTSOLDER goes right into yours eyes, blinding you for life!
Be careful up there, kids - space is dangerous and full of monsters and SUPERHOTSOLDER!"
As to why the rosin separates from the solder, I don't know. But I think I know why it spins.
Heat is being conducted into the rosin ball from the molten solder. The rosin is boiling or vaporising. Initially, this is symettric, but if only a small jiggle occurs, one side of the blob gets cooled by the air, and starts to vaporize at a lower rate. The other, trailing side vaporizes at a higher rate, and in reaction of the ball experiences a push from that side. The movement increases the cooling effect on the upwind side, and the process feeds on itself. Since the rosin blob touches only the liquid solder, there is little or no friction , and these tiny effects can build up.
The astronaut was lucky the rosin ball didn't come right off and hit him in the eye.
Believe it or not, this type of thing could be very useful to know. Sure, it's just a simple solder now, but what about other melted metals? For example, take 3D printing. Gravity tends to limit the types of shapes you can make, and the materials you can use. But what if we could 3D print steel? We could build a spaceship in record time! All we'd need are some "printer" robots and CAD software to control them!
:-)
So be careful about what you rag on.
Javascript + Nintendo DSi = DSiCade