Mathematicians Of The Day

25th May

On this day in 1842, Johann Doppler presented a lecture to the Royal Bohemian Society on the Doppler Effect. It was first experimentally verified in 1845 using a locomotive drawing an open car with several trumpeters.

Click on for a poster.

Quotation of the day

From Raymond Smullyan
Why should I be worried about dying? It's not going to happen in my lifetime!

Theorem of the day from Robin Whitty