Mathematicians Of The Day

23rd April

On this day in 1827, William R Hamilton presented a paper on optics, Theory of systems of rays, to the Royal Irish Academy while still a 21 year-old undergraduate. It is in this paper that Hamilton introduced the characteristic function for optics.

On this day in 2014 Google released a Planck doodle.

Click on for a poster.

Quotation of the day

From Max Planck
An important scientific innovation rarely makes its way by gradually winning over and converting its opponents: it rarely happens that Saul becomes Paul. What does happen is that its opponents gradually die out, and that the growing generation is familiarised with the ideas from the beginning.
Scientific Autobiography (New York 1949).