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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. michael_nielsen‏ @michael_nielsen 3 Oct 2017
      • Report Tweet

      michael_nielsen Retweeted The Nobel Prize

      It's difficult to overstate how remarkable an achievement LIGO is.https://twitter.com/NobelPrize/status/915152867874476032 …

      michael_nielsen added,

      The Nobel PrizeVerified account @NobelPrize
      The 2017 #NobelPrize in Physics is awarded “for decisive contributions to the LIGO detector and the observation of gravitational waves” pic.twitter.com/qjO5MmxmlZ
      3 replies 55 retweets 136 likes
      Show this thread
    2. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      In part, that's because it's a new way of observing the Universe, like the early telescopes or microscopes.

      2 replies 1 retweet 10 likes
      Show this thread
    3. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      But also because of how darn hard it was to do.

      1 reply 1 retweet 4 likes
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    4. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      In 1998 I went to a talk by Kip Thorne where he said LIGO would likely need a strain sensitivity of "1 part in 10 to the 21" to see anything

      1 reply 1 retweet 9 likes
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    5. michael_nielsen‏ @michael_nielsen 3 Oct 2017
      • Report Tweet

      That's an accuracy comparable to measuring the distance to the Sun to an accuracy of one atom.

      1 reply 6 retweets 21 likes
      Show this thread
    6. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      At the time I simply laughed, and thought it would take centuries, or never happen.

      2 replies 0 retweets 11 likes
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    7. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      Here's the abstract for the Nobel-winning paper. And there, in the second sentence, a "strain of 10^-21", bang on the money.pic.twitter.com/oej6Anewmw

      2 replies 27 retweets 55 likes
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    8. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      Frankly, it's just utterly, utterly mindboggling that (a) we could predict gravitational waves; that

      1 reply 1 retweet 7 likes
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    9. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      (b) people like Joseph Weber and Rai Weiss could even conceive of measuring them; and

      1 reply 0 retweets 3 likes
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    10. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      (c) that people like Weiss, Thorne, Barish, Drever and their many, many collaborators could actually carry it out.

      1 reply 0 retweets 2 likes
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      michael_nielsen‏ @michael_nielsen 3 Oct 2017
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      Oh, and (d) that they persisted over half a century!

      5:46 AM - 3 Oct 2017
      • 8 Likes
      • 🎃 khuong luu 🎃 Neil Ross rohin arora Lev Reyzin Michael d'Arcy Chris Olah Amit Patel Giovanni d'Ario
      1 reply 0 retweets 8 likes
        1. New conversation
        1. michael_nielsen‏ @michael_nielsen 3 Oct 2017
          • Report Tweet

          So, hat's off to all of them, & congrats on an utterly remarkable achievement, one giving us a new window onto the Universe.

          1 reply 0 retweets 5 likes
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        2. michael_nielsen‏ @michael_nielsen 3 Oct 2017
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          Oh - and here's looking forward to the next 50 years, as we improve the sensitivity of detection, and make many major discoveries!

          1 reply 0 retweets 12 likes
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          3. End of conversation

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