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fermatslibrary's profile
Fermat's Library
Fermat's Library
Fermat's Library
@fermatslibrary

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Fermat's Library

@fermatslibrary

A platform for illuminating academic papers. We publish an annotated paper every week. Our chrome extension for arXiv: https://fermatslibrary.com/librarian 

fermatslibrary.com
Joined September 2015

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    Fermat's Library‏ @fermatslibrary 13 Jan 2019
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    Exactly 409 years ago, Galileo observed the following position of Jupiter and its 4 moons 🗓 Jan 13 - 🌛 🌑 🌛 🌛 🌛 🗓 Jan 15 - 🌑 🌛 🌛 🌛 🌛 These observations would later confirm that Ptolemy’s geocentric view of the universe was wrong.

    5:50 AM - 13 Jan 2019
    • 512 Retweets
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    • Edward W. Kostas Nikolaou TheKnightIdea Олександр طارق Lara. 078 DARSHAN JAIN Shaif m.
    16 replies 512 retweets 1,969 likes
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      2. Hellfire !!‏ @ktr1975 13 Jan 2019
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        Replying to @fermatslibrary

        Indian event of Kumbh in pragraj happens every 12 yrs and has been happening since atleast 2000 yrs.. it's based on full circle of brahaspati (Jupiter) . Indians knew of this much bfr Galileo

        1 reply 2 retweets 13 likes
      3. Stuey Phooey  🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇬🇧‏ @StueyPhooey 13 Jan 2019
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        Replying to @ktr1975 @fermatslibrary

        12 (Earth) years is the time it takes Jupiter to orbit the sun. That says nothing about Jupiter's moons, which are invisible to the naked eye.

        0 replies 0 retweets 3 likes
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      2. JaK‏ @jacopoprendin 13 Jan 2019
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        Replying to @fermatslibrary

        Yes, but these where conjectures. The real breakthrough was *proving* heliocentric model. Conjectures are useful, but to became real models they need Proofs and Formulas

        1 reply 0 retweets 4 likes
      3. JaK‏ @jacopoprendin 13 Jan 2019
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        Replying to @jacopoprendin @fermatslibrary

        Copernicus had problems to get right predictions ‘cause he still believed in helicycles and constant orbital speeds. Kepler was able to fix it with elliptic trajectories with variable speeds. Newton collects ALL these concepts in his “Principia”

        0 replies 0 retweets 9 likes
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      1. Burak Karabey‏ @burak_karabey 13 Jan 2019
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        Replying to @fermatslibrary

        @razor0fOccam seversiniz 😊

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      1. Husne‏ @husnefikri 13 Jan 2019
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        Replying to @fermatslibrary

        & proposed seafarers to watch the celestial event as a way to find their longitude but it isn’t practical on a rocking boat. On land, cartographers used it to draw maps.

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      1. Erwin Franz‏ @ERWIN_FRANZ 13 Jan 2019
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        Replying to @fermatslibrary

        Ptolemy’s model was so fine tuned and agreed so well with observation that Galileo ‘s feat might be one of the greatest of all time.

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      1. Roger Sauer‏ @rsauer3473 13 Jan 2019
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        And yet four centuries would pass before Wilhelmina Beaufranc’s imaginitive theory of EarthSuck would surpass gravitation as the dominant explanation of planetary orbits and “suckness” and “suckitude” would become useful terms in scientific circles.

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