# Getting the life sucked out of you...

2379 Views 36 Replies 17 Participants Last post by  bigh47
This is a video taken in 6000 feet (1.8km) of water. An undersea robot is sawing a 3mm wide slit (remember that width) in a pipeline. The pressure inside the pipeline is 0 PSI while the pressure out side is 2700PSI, or 1.3 tons per square inch (or about 200 Bar).

...and then a crab walks by.

http://peligra.netcity.co.uk/mixes/crabvspipe11.mpg
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Umm, I wish I hadn't seen that!
Cool.
That is a bit disturbing...but still funny!
It's not any different then watching those nature films where the strongest catches the weak of a herd to eat. At least no blood and guts.
Yeah, but it's such a tiny hole, 3mm, and we aren't talking about a fish that has no bones , this is a crab, it's just...just...wow
looks like he just got married

joking Vic, et al

btw gibb's all fish have bones
He didnt just get sucked into a hole, it was 3 millimeters, waaay less than an inch wide.

Umm, yeah, actually I realized that when I typed it, I was thinking tiny bones and cartilage(sp?) would be more accurate.
Originally posted by jakoval:

No no, that would be called "Getting the life sucked out of you after you have been bent over, shafted, and kicked while you're down..."
I don't understand why there is a pressure difference? Wouldn't the fact that there is a hole in that pipe equalize the pressure?
Originally posted by Mulder:
I don't understand why there is a pressure difference? Wouldn't the fact that there is a hole in that pipe equalize the pressure?
The crab probably walked by at the point the hole was created, plus it would take quite a while to fill the pipe with water, and that water would be sucked in VERY fast.
Originally posted by Gibble:
No no, that would be called "Getting the life sucked out of you after you have been bent over, shafted, and kicked while you're down..."
I thought you Canucks were happy paying all those taxes? At least that's what the liberals tell us down here in the US!
Originally posted by Gibble:
No no, that would be called "Getting the life sucked out of you after you have been bent over, shafted, and kicked while you're down..."
So Gibble, you're referring the Canadian Tax situation to what it's like when you get a bill for legal services from Mulder???
Originally posted by Mulder:
I don't understand why there is a pressure difference? Wouldn't the fact that there is a hole in that pipe equalize the pressure?
There wasn't a hole in the pipe until the underwater robot cut it.
Cool

But if you think about it the crab wasn't really being sucked into the tube. It was being pushed in by all the water, which was being forced into the low pressure tube by the weight of all the water from above. Sorry, just one of my many pet peeves, suction as my Chemistry Prof. pointed out, is a flawed concept. In reality everything is pushed.
Umm, I wish I hadn't seen that!
\

Jeez! What's the big deal?

Haven't you ever tossed a tastey crustacean into a blender and made yummy crab pate'?

Or shucked a juicy oyster and sucked it back then chased it with a sip of Chablis?

Originally posted by pyritechips:
\

Jeez! What's the big deal?

Haven't you ever tossed a tasty crustacean into a blender and made yummy crab pate'?

Or shucked a juicy oyster and sucked it back then chased it with a sip of Chablis?

Ok now that just makes me reaaaaaaal hungry. I just love sea food. Damn pipe ate my supper.
Originally posted by brendandonhu:
There wasn't a hole in the pipe until the underwater robot cut it.
You think I'm going to listent to a 14 year old who is still wet behind the ears?

Actually, the picture looked to me like there was already a hole in the pipe and it was continuing to cut across it. But if the crab walked across right when the hole was opened, the that makes sense.
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