Search found 3 matches

by altay
Fri Nov 09, 2018 8:20 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 2070: "Trig Identities"
Replies: 18
Views: 5109

Re: 2070: "Trig Identities"

It looks like Randall made a mistake in the eighth equation.

Code: Select all

casθ = o/c

should be

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casθ = a^2/(oc)

if he's starting with the cosine equation, or alternatively

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casθ = c/e

if he's starting from secant.
by altay
Fri Dec 26, 2014 5:11 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1465: "xkcd Phone 2"
Replies: 32
Views: 8701

Re: 1465: "xkcd Phone 2"

bachaddict wrote:"Ribbed" makes me think of some drawings I saw, of gadgets like iPods cut away to show bones and organs inside. Can anyone find what I'm talking about?

I think this is what you're thinking of: imgur . com / gallery / eAvna
by altay
Tue Oct 22, 2013 7:22 pm UTC
Forum: What If?
Topic: What-If 0068: "Little Planet"
Replies: 70
Views: 18385

Re: What-If 0068: "Little Planet"

if your planet is intended to have humans walk on it without a spacesuit, it needs to have moving gas molecules, and those need to be well below escape velocity, which they clearly are not here. What if we built a glass dome around the atmosphere? It would allow us to contain the atmosphere, and th...

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