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John Conway on Numberphile!

Numberphile, the supremum over all YouTube channels, has scored a bit of a coup – Brady has sat down and recorded an interview with the famously Internet-reclusive John Conway.

In this first video (there’s a bonus one linked at the end of this one, and I hope there’ll be more) John talks about his love/hate relationship with his Game of Life.

[youtube url=https://www.youtube.com/watch?v=E8kUJL04ELA]

By the way, I notice from the video’s description that the Mathematical Sciences Research Institute is paying for Numberphile these days. Thanks, MSRI!

NT matters (Wrapping up algebraic numbers)

Aperiodipal Nathan Barker sent me this video by Durham University’s Herbert Gangl, inspired by his number theory course last year.

[youtube url=https://www.youtube.com/watch?v=wTFCPnxe9Jc]

I’ll never be able to think about algebraic numbers again without hearing this. Thanks, Herbert! No thanks, Nathan!

Amazing Sierpinski Tetrahedron

In the wake of a flurry of tetrices being constructed in schools all over the country (see this post about fractal Christmas tree worksheets, and this post featuring photos of completed trees), we’ve also been sent a video of a school group constructing an ambitious and impressive fractal structure, using envelopes cleverly folded into tetrahedra. The video is below, and features (eventually) a level 5 Sierpinski Tetrahedron, made from 1024 envelopes!

[youtube url=http://www.youtube.com/watch?v=2lYj5YcPAIg]

Via teacher Tim Dolan on Twitter.

Videos from MathsJam 2012

While we were at the big MathsJam conference a few weekends ago, we took the opportunity to point a camera in people’s faces and ask them to tell us something interesting. Because of the high quality of MathsJam attendees, this went better than it would in most other contexts.

Here’s a collection of clips we recorded while people were digesting both their dinners and the first day’s talks.

[youtube url=http://www.youtube.com/watch?v=fg_IeC1M5D4]