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  1. Plus Advent Calendar Door #7: A gaping hole

    ... to nurture mathematical creativity. The site is aimed at 7 to 16 year-olds, but open to all. It provides games, investigations, stories ...

    Marianne - 7 Dec 2015 - 10:46 - 0 comments

  2. Bach and the musical torus

    ... II of Prussia (Frederick the Great) in Potsdam on May 7, 1747. The King, who was himself a musician, proposed a theme on which Bach, ... bottom voice) exactly, except one measure later and a fifth (7 half-steps) higher. The bottom voice starts on the C below middle C; the ...

    Marianne - 12 Dec 2017 - 12:24 - 2 comments

  3. Plus Advent Calendar Door #7: What's your favourite number?

    What's your favourite number? If it's 7 then you're not alone. Alex Bellos, one of our favourite maths authors, ... from around the world, he found that the winner was ... 7! To find out more about the poll, see favouritenumber.net or read ...

    Marianne - 7 Dec 2014 - 12:22 - 0 comments

  4. Carnival of maths

    ... carnival invites mathematical bloggers to submit the recent blog posts they're most proud of and the current host then publishes a list of ... first edition: http://math4allages.wordpress.com/2010/07/12/blog-carnival-1/ Please email me if you are interested at ...

    Marianne - 13 Aug 2010 - 20:23 - 1 comment

  5. Flying home with quantum physics

    ... explanation of electron spin read this entertaining blog by Chad Orzel , which includes a demonstration by his toddler!) "The ... N@C60 — is incredibly hard to make (and costs around £7 million a gramme). The birds certainly don't have access to this material, so ...

    Marianne - 19 Aug 2016 - 23:29 - 1 comment

  6. Puzzle page

    ... 2011 How to make 21 with 1, 5, 6 and 7? reply Here is ...

    plusadmin - 7 Jul 2010 - 14:58 - 7 comments

  7. Stuff Happens: Ordering history in computer science

    ... article first appeared on the FQXi Community website in 2008. High fidelity — Physicists tend to think of the world ...

    Rachel - 30 Nov 2017 - 12:48 - 0 comments

  8. Fourier transforms of images

    ... Reminds me of this recent Productchart blog post, where they swapped the position and brightness of pixels in ...

    Rachel - 30 Nov 2017 - 12:48 - 5 comments

  9. The life and numbers of Fibonacci

    ... "These are the nine figures of the Indians: 9 8 7 6 5 4 3 2 1. With these nine figures, and with this sign 0 which in Arabic is ... to have seven spiralling arms of seeds. This is because 22/7 is a very good rational approximation of pi. What is needed in order ...

    plusadmin - 1 Nov 2017 - 15:50 - 28 comments

  10. Matrix: Simulating the world Part II: cellular automata

    By  Lewis Dartnell March 2008 Welcome to a virtual world. Even complex processes can ... ⇒ 010 4. 010 ⇒ 001 5. 100 ⇒ 010 6. 101 ⇒ 010 7. 110 ⇒ 101 8. 111 ⇒ 110 Situation 1 is the simplest case; the ...

    plusadmin - 15 May 2017 - 12:22 - 0 comments