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michael_nielsen's profile
michael_nielsen
michael_nielsen
michael_nielsen
@michael_nielsen

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michael_nielsen

@michael_nielsen

Searching for the numinous. Co-purveyor of https://quantum.country/ 

San Francisco, CA
michaelnielsen.org
Joined July 2008

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    1. Christine Corbett Moran‏Verified account @corbett 24 Jul 2015
      • Report Tweet

      Amazing visualization of the solid surface area of spaces in our solar system by @xkcd https://xkcd.com/1389/large/ 

      2 replies 5 retweets 11 likes
    2. David Soergel‏ @loraxorg 24 Jul 2015
      • Report Tweet
      Replying to @corbett

      . @corbett @michael_nielsen @xkcd Looks like all human skin would just about cover Sri Lanka. Ugh!

      2 replies 1 retweet 2 likes
    3. michael_nielsen‏ @michael_nielsen 24 Jul 2015
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      Replying to @loraxorg

      @loraxorg @corbett @xkcd Roughly: 100 billion humans ever, 0.5 m^2 / human = 50 billion m^2 = 50,000 km^2. Sri Lanka: 65,610 km^2. Urp.

      1 reply 0 retweets 0 likes
    4. David Soergel‏ @loraxorg 24 Jul 2015
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      Replying to @michael_nielsen

      @michael_nielsen @corbett @xkcd New skin every 2-3 weeks. Historical life expectancy 35yr, so >600 skins/person. 30M km^2 = Asia + Africa.

      3 replies 0 retweets 2 likes
    5. Christine Corbett Moran‏Verified account @corbett 24 Jul 2015
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      Replying to @loraxorg

      @loraxorg @michael_nielsen @xkcd you guys are making my skin crawl!

      1 reply 0 retweets 1 like
      michael_nielsen‏ @michael_nielsen 24 Jul 2015
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      Replying to @corbett

      @corbett @loraxorg @xkcd I'd never noticed before, but I guess Fermi calculations have a kind of inexorable logic to them!

      7:02 PM - 24 Jul 2015
      0 replies 0 retweets 0 likes

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