MacTutor
Mathematicians Of The Day
6th March
On this day in 1689 Edmond Halley first wrote about diving equipment, perhaps prompted by his work on the Thames survey undertaken around that time. Halley proposed a mobile diving bell built on four wheels, and while he did not build that particular bell, he did build another as part of his salvage work on the wreck of the Guynie frigate.
See THIS LINK and a stamp at THIS LINK.
See THIS LINK and a stamp at THIS LINK.
Click on Ⓟ for a poster.
Born:
- 1847: Cesare Arzelà Ⓟ
- 1866: Ettore Bortolotti Ⓟ
- 1875: Edward Blades Ⓟ
- 1897: Annie Hutton Numbers Ⓟ
- 1901: Naum Il'ich Akhiezer Ⓟ
- 1935: Helge Tverberg Ⓟ
Died:
- 1866: William Whewell Ⓟ
- 1939: Ferdinand von Lindemann Ⓟ
- 1944: Aleksandr P Kotelnikov Ⓟ
- 2005: Hans Bethe Ⓟ
Quotation of the day
From Ferdinand von Lindemann
The oxygen atom has the shape of a ring, and the sulphur atom, the shape of a clot.
