Mathematicians Of The Day
26th September
On this day in 1679, a fire destroyed the home and observatory of Johannes and Koopman Hevelius in Danzig (now Gdańsk).
See THIS LINK.
See THIS LINK.
Click on Ⓟ for a poster.
Born:
- 1688: Willem 'sGravesande Ⓟ
- 1731: Gianfrancesco Malfatti Ⓟ
- 1854: Percy MacMahon Ⓟ
- 1891: Hans Reichenbach Ⓟ
- 1926: Brian Haselgrove
- 1927: Brian Griffiths Ⓟ
Died:
- 1766: Giulio Fagnano Ⓟ
- 1802: Georg Vega Ⓟ
- 1868: August Möbius Ⓟ
- 1877: Hermann Grassmann Ⓟ
- 1910: Thorvald Thiele Ⓟ
- 1976: Paul Turán Ⓟ
- 1979: K K Weatherhead
- 1990: Lothar Collatz Ⓟ
Quotation of the day
From Hans Reichenbach
Let us assume that the three dimensions of space are visualized in the customary fashion, and let us substitute a color for the fourth dimension. Every physical object is liable to changes in color as well as in position. An object might, for example, be capable of going through all shades from red through violet to blue. A physical reaction between any two bodies is possible only if they are close to each other in space as well as in color. Bodies of different colors would penetrate each other witout interference ... If we lock a number of flies into a red glass globe, they may yet escape: they may change their color from red to blue and are then able to penetrate the red globe.