Various

Did you like the three-pendulum harmonograph videos? If you did then you will like the website below where you will find mathematical models of it built in excel and very well documented.

I came across a two-word mathematical joke that went like this:


Swine! - Coswine!

If you are into statistics and know how to program javascript then this is probably a must-see website. Add perfect ( statistical ) graphics to a website in a few lines of javascript.

Another hard debunk of the Golden Ratio, the ratio between a Fibonacci number and its predecessor. The link to the work of Leonardo da Vinci was already debunked but it has now been established that there is no link between the Fibonacci numbers and the Nautilus. Read more here.