Search found 4 matches

by Möbius
Wed Mar 06, 2013 5:06 am UTC
Forum: What If?
Topic: What-if 0035: "Hair Dryer"
Replies: 100
Views: 32378

Re: What-if 0035: "Hair Dryer"

The manhole cover legend comes from 1957, Operation Plumbbob during the Pascal B test shot. This was an underground nuclear weapons test wherein the borehole had a steel lid (the manhole cover) welded to the well casing. Look up the Pascal B shot here for a short description of the manhole cover sto...
by Möbius
Fri Sep 21, 2012 5:32 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1110:"Click and Drag"
Replies: 595
Views: 667417

Re: 1110:"Click and Drag"

According to the source, the full picture is 165888x79872 pixels in size. At 600 dpi, that would print out at 23 x 11 feet. I want it. And I want a room to put it in. I love the underground sections reminiscent of Super Metroid. Very cool. I make part of my living printing very large images -- thou...
by Möbius
Tue Dec 29, 2009 4:26 am UTC
Forum: Individual XKCD Comic Threads
Topic: 0681: "Gravity Wells"
Replies: 205
Views: 54863

Re: "Gravity Wells" Discussion

At sea level g (acceleration due to gravity) on earth is ~9.8 m/(s^2), but as you go deeper the gravity decreases. That would be true if the Earth were a uniform, spherical, homogeneous cow. In general, gravitational acceleration increases as you approach the surface of the outer core, then decreas...
by Möbius
Mon Dec 28, 2009 9:42 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0681: "Gravity Wells"
Replies: 205
Views: 54863

Re: "Gravity Wells" Discussion

Awesome graphic! I did something similar last year, but as usual, XKCD wins on style. Way to go!

Fwiw, here's my discussion of gravitational potential within the solar system:
http://www.typnet.net/Essays/GravPot.htm

--
Möbius

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