## Search found 9 matches

- Mon Jul 22, 2013 8:43 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1241: "Annoying Ringtone Champion"
- Replies:
**68** - Views:
**23142**

### Re: 1241: "Annoying Ringtone Champion"

194 dB? I thought the loudest sound possible without creating a distortion/shock wave is just above 191 dB.... Since the pressures in a dB calculation are RMS pressures, ~194.09 dB corresponds to plugging in 101,325 Pa. But it seems to me it should be 101,325/√2 (meaning the peak pressure is 1 atm),...

- Fri Dec 14, 2012 7:17 am UTC
- Forum: Mathematics
- Topic: Probability that x/y > x^y
- Replies:
**10** - Views:
**2440**

### Re: Probability that x/y > x^y

But I like doing blind stats..... :) That's the problem with doing mathematics in the computer era. It's so tempting to try to solve stuff with sheer brute force, when a little bit of actual analysis can often help enormously. I know. But I'm in the midst of finals; I shouldn't even be bothering wi...

- Fri Dec 14, 2012 6:39 am UTC
- Forum: Mathematics
- Topic: Probability that x/y > x^y
- Replies:
**10** - Views:
**2440**

### Re: Probability that x/y > x^y

But I like doing blind stats.....

- Fri Dec 14, 2012 4:10 am UTC
- Forum: Mathematics
- Topic: Probability that x/y > x^y
- Replies:
**10** - Views:
**2440**

### Re: Probability that x/y > x^y

I'm not sure how to get the analytical answer. But it appears to be "oscillating" between two envelopes, as you can see from your graph; going up to a little higher than the last peak, going down to a little higher than the last trough, etc. I whipped up a quick Matlab code with a bunch of...

- Thu Sep 20, 2012 2:43 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1110:"Click and Drag"
- Replies:
**595** - Views:
**674199**

### Re: 1110:"Click and Drag"

I actually don't think this is the last comic. However, what I am predicting is that Friday's comic will be a single panel, with something very introspective (much like this). But if this is the end, then as countless people have said before: Thank you Randall, for creating and giving us truly one o...

- Mon Sep 17, 2012 12:23 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1047: "Approximations"
- Replies:
**159** - Views:
**70865**

### Re: 1047: "Approximations"

Another one: the temperature of the universe (or at least it's CMB radiation) is e K, accurate to almost 1 in 400.

- Sun Sep 16, 2012 10:38 pm UTC
- Forum: Mathematics
- Topic: I can't find an error in this proof
- Replies:
**5** - Views:
**1925**

### Re: I can't find an error in this proof

There's also the fact the [imath]\sqrt[n-1]{n}[/imath] term is indeterminate when n=1, and even the limit as n-->1 is e. Rational, my ass...

- Thu Sep 13, 2012 2:23 am UTC
- Forum: What If?
- Topic: What-If 0011: "Droppings"
- Replies:
**68** - Views:
**32067**

### Re: What-If 0011: Droppings

I know the gas mileage bit is pretty off-topic. But I know I've thought about the fact that's it's technically [m/m

A quick tidbit on that: if a car gets X mpg, its "fuel tube" would have a diameter of very nearly [imath]\sqrt{3/X}[/imath] mm.

^{3}], so I found it amusing.A quick tidbit on that: if a car gets X mpg, its "fuel tube" would have a diameter of very nearly [imath]\sqrt{3/X}[/imath] mm.

- Thu May 03, 2012 5:54 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1047: "Approximations"
- Replies:
**159** - Views:
**70865**

### Re: 1047: "Approximations"

Here's a whole bunch more (mostly numerical, not many constants/unit conversions):

http://en.wikipedia.org/wiki/Mathematical_coincidence

http://en.wikipedia.org/wiki/Mathematical_coincidence