November 20, 2008: Whole Lotta Hole

xoxoxoBruce · 11-20-2008, 12:31 AM

Just like getting a BJ from grandma... don't look down.

Quote:

Hold on to your specs while peering down here. You'd have a long climb to the bottom if they fell off.
This rocky chasm in China is one of the world's deepest underground shafts. It stretches down for an astonishing 3,100ft, or 1,026 metres.
An international team of cave explorers who discovered the cave, near the village of Tian Xing, are seen descending into the abyss.

Quote:

The picture was taken by photographer Robert Shone, 28, of Manchester, who spent two months with the climbers documenting-their explorations. Camping underground for four to five days at a time, the team were able to explore the extensive network of caves and tunnels.Though unimaginably deep, the Chinese caves are actually dwarfed by others across the globe.
The world's deepest cave is Krubera in Georgia, which is 6,822ft deep (2,080 metres), followed by Lamprechtsofen in Austria (5,354ft or 1,631 metres) and Gouffre Mirolda in France (5,335ft or 1,626 metres).

Link

Kolbenfresser · 11-20-2008, 03:35 AM

Amazing. I'm gonna start a second career as a cave explorer right away.
Is this the cave where the Chinese Government dumps all the executed people? It shouldn't be that deep anymore...

ZenGum · 11-20-2008, 04:43 AM

Should we tell Sheldon there is a giant vertical shaft in the IotD?

I just did some calculations, and if I got them right, if you tossed a stone into that shaft it would take 14.5 seconds to hit the bottom. There would be another three seconds before the sound reached you back at the top.
When it hit it would have been doing 510 kph (317mph) less wind resistance.

footfootfoot · 11-20-2008, 09:53 AM

I thought terminal velocity was around 200mph?

sweetwater · 11-20-2008, 09:57 AM

Obviously the work of a big Horta with locomotion difficulties.

glatt · 11-20-2008, 10:00 AM

It's really cool how smooth/straight that hole is. I'm no geologist. There's probably some simple explanation for how it was formed, but I can't imagine what that would be.

lumberjim · 11-20-2008, 10:02 AM

THIS THING:

Cicero · 11-20-2008, 10:16 AM

I just want to throw a hot dog down there. Zen can calculate it for me. And Sheldon could laff.

Sheldonrs · 11-20-2008, 10:23 AM

Quote:

Originally Posted by ZenGum

Should we tell Sheldon there is a giant vertical shaft in the IotD?...

I've been aware of you for some time. ;-)

Cloud · 11-20-2008, 10:37 AM

spelunking will NOT appear in my obituary

Sheldonrs · 11-20-2008, 11:03 AM

Quote:

Originally Posted by Cloud

spelunking will NOT appear in my obituary

But "Horrendous personal pleasuring device accident' will.

Cloud · 11-20-2008, 11:04 AM

oh, one can only hope!

HungLikeJesus · 11-20-2008, 11:23 AM

Quote:

Originally Posted by ZenGum

Should we tell Sheldon there is a giant vertical shaft in the IotD?

I just did some calculations, and if I got them right, if you tossed a stone into that shaft it would take 14.5 seconds to hit the bottom. There would be another three seconds before the sound reached you back at the top.
When it hit it would have been doing 510 kph (317mph) less wind resistance.

I got slightly different numbers, but I didn't account for bouncing off the walls on the way down.

SteveDallas · 11-20-2008, 11:36 AM

What about terminal velocity? I guess you couldn't figure it unless you knew the exact size & mass of the stone and figured out the air resistance.

HungLikeJesus · 11-20-2008, 11:38 AM

All you really need is the mass, frontal area and drag coefficient.

11-20-2008, 03:35 AM	#2
Kolbenfresser Confounded Conjuror Join Date: Aug 2007 Location: Good old Germany Posts: 33	Amazing. I'm gonna start a second career as a cave explorer right away. Is this the cave where the Chinese Government dumps all the executed people? It shouldn't be that deep anymore... __________________ In cauda venenum.

11-20-2008, 04:43 AM	#3
ZenGum Has OCD and ADD; has OCD and hey look at the birdy! Join Date: Oct 2007 Location: Badelaide, Baustralia Posts: 6,699	Should we tell Sheldon there is a giant vertical shaft in the IotD? I just did some calculations, and if I got them right, if you tossed a stone into that shaft it would take 14.5 seconds to hit the bottom. There would be another three seconds before the sound reached you back at the top. When it hit it would have been doing 510 kph (317mph) less wind resistance. __________________ Shut up and hug. MoreThanPretty, Nov 5, 2008. Just because I'm nominally polite, does not make me a pussy. Sundae Girl.

11-20-2008, 09:53 AM	#4
footfootfoot Rent this space Join Date: Aug 2004 Location: in the house and on the street Posts: 5,837	I thought terminal velocity was around 200mph? __________________ Maybe we could just burn her a little? Like a cigarette burn or something. --DanaC

11-20-2008, 09:57 AM	#5
sweetwater lives inside a Mobius strip Join Date: Dec 2007 Posts: 1,109	Obviously the work of a big Horta with locomotion difficulties. __________________ I knew I shoulda taken that left turn at Albuquerque! - Bugs Bunny

11-20-2008, 10:02 AM	#7
lumberjim just say no to entropy Join Date: Oct 2003 Posts: 19,044	THIS THING: __________________ One is always in the dark about one's own personality. One needs others to get to know oneself. - Carl Jung

11-20-2008, 10:00 AM	#6
glatt waiting like a stalking Butler Join Date: Jul 2003 Location: Arlington, VA Posts: 11,820	It's really cool how smooth/straight that hole is. I'm no geologist. There's probably some simple explanation for how it was formed, but I can't imagine what that would be.

11-20-2008, 10:16 AM	#8
Cicero Looking forward to open mic night. Join Date: Oct 2006 Location: New Mexico Posts: 5,141	I just want to throw a hot dog down there. Zen can calculate it for me. And Sheldon could laff. __________________ Show me a sane man, and I will cure him for you.- Carl Jung

11-20-2008, 10:37 AM	#10
Cloud Evil Mignonette Join Date: Feb 2007 Location: USA MTZ (GMT-7) Posts: 7,676	spelunking will NOT appear in my obituary __________________ The Owl and the Pussycat. Yeah, they went to sea, and there were pussies involved. Look it up!

11-20-2008, 11:04 AM	#12
Cloud Evil Mignonette Join Date: Feb 2007 Location: USA MTZ (GMT-7) Posts: 7,676	oh, one can only hope! __________________ The Owl and the Pussycat. Yeah, they went to sea, and there were pussies involved. Look it up!

11-20-2008, 11:36 AM	#14
SteveDallas still likes Winona Ryder Join Date: Jan 2002 Location: Philly Burbs, PA Posts: 7,366	What about terminal velocity? I guess you couldn't figure it unless you knew the exact size & mass of the stone and figured out the air resistance.

11-20-2008, 11:38 AM	#15
HungLikeJesus What makes you think I'm done playing with it? Join Date: Feb 2007 Location: above 7,000 feet Posts: 4,757	All you really need is the mass, frontal area and drag coefficient. __________________ I sigh the lack of many a thing I sought, And with old woes new wail my dear time's waste SteveDallas's Random Thread Picker.

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