Spam ([info]madbodger) wrote,
@ 2009-05-21 22:21:00
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Current location:Purcellville
Current mood: curious
Current music:Everybody's Got To Learn Sometime-Zucchero-Zu & Vanessa Carlton
Entry tags:geekery

Math, astrophysics, and humour
Quite some time ago, I read a humourous piece about the mass of Pluto. The writer decided to collect the estimates of Pluto's mass over the years, assume that they were all, in fact, correct, and apply a curve fit to their values over time. He came up with some sort of a sine function to an irrational power. He went on to say that the sine function would pass through zero some year hence, and then become negative. And he pointed out that a negative number to an irrational power yields a complex number. And gleefully added something to the effect that "while this idea may be repulsive to some, Pluto will be repulsive to everything.". Sadly, I don't remember where I found this essay, and the usual array of search engines comes a cropper.

Musing on this somewhat abstruse bit of humour, I recalled the recent ballyhoo over the IAU no longer regarding Pluto as a planet, and started to wonder. Was this theory actually correct, and Pluto is indeed shrinking? Are they trying to soften up the blow for when Pluto either vanishes in place or, repelled by the Sun, scoots off into the eternal darkness, never to be seen again?



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aw!
[info]beaq
2009-05-22 02:30 am UTC (link)
You wax so flippant about so sad a thing!

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Re: aw!
[info]dcseain
2009-05-22 02:53 am UTC (link)
And this is why we love him. :)

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[info]jim_p
2009-05-22 04:00 am UTC (link)
I don't have the numbers, but I note that for a while there the mass of Pluto had been getting smaller and smaller while the mass of Charon had been getting bigger and bigger. Perhaps the oncoming negative mass of Pluto will be cancelled out by Charon's impressive new mass?

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[info]ilanarama
2009-05-23 12:18 am UTC (link)
I have that on a sheet of paper, acquired long before Al Gore invented the internet. It's in my basement, I think. Maybe I shall go look for it.

ETA and actually, I'm pretty sure I got it from my Dad, so ask Allon to ask him about it and I bet he'll send you a copy.

Edited at 2009-05-23 12:20 am UTC

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[info]madbodger
2009-06-25 05:45 am UTC (link)
I got in touch with your dad, who remembered it had been published in Eos a long time ago, and sent me a couple of guesses as to who wrote it. Emailing them, I reached the author, who scanned the original and sent me a PDF. Thanks!

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