Was Hippasus pushed? If you are even mildly interested in the history of mathematics, it is likely that you will have heard something like the following story. The Pythagoreans (who were also into music in a big way) worshipped numbers, and believed them to be the basis of everything. If one were to do a modern caricature of this, it might go:

  Do you believe in Rock ’n’ Roll?
  Can mathematics save your soul?

By numbers, they meant whole numbers or positive integers. Whether this included ‘one’ is a moot point, because later Greek mathematicians regarded ‘one’ as the ‘generator of numbers’. One day, a man called Hippasus discovered that the square root of 2 was irrational. This went so much against the Pythagorean world view that they took him out to sea and threw him overboard. It didn’t stop there, though.

FLEMING DOES NOT RULE OK! These could be what Physics World calls Lateral Thoughts, because I originally wrote this horizontally with my leg in plaster. Here follow some snapshots of my journey through Physics, which is not a straightforward one like that of Marco Polo, but a meandering one like that of the 14th century Moroccan traveller Ibn Battuta. But this is no random selection, but a selected album entitled “Electromagnetism.” The prologue to this tale finds me as a pre-teenager in the mid 1950’s, poring over my Pictorial Encyclopaedia. I eagerly drink in the graphical information along with the textual, and today I still recall the story of our Earth being pulled out of our Sun, along with the other planets, by a passing star. My chief custard pie, though, is reserved for the illustrator who depicted the arteries and ventricles of the heart, on both sides, as blue, and similarly the veins and auricles in red.