John W. Nystrom

John W. Nystrom ( John William N. or Johan Vilhem N., * 1825, † 1885) was a born in Sweden American engineer. He lived mainly in Philadelphia (Pennsylvania).

As a recognized technical inventors him several patents have been granted, for example, for ship propellers, cooling units and calculating machines. His Gleitrechenschieber (slide ruler ) with the patent number 7961 of 4 March 1851 was one of the first U.S. patents at all.

Tonal system

Around 1863 he created a hexadecimal system of units, called " tonal system" ( tonal system ), with a hexadecimal time format of 16 hours per day.

" I am not afraid, or do not hesitate, to advocate a binary system of arithmetic and metrology. I know I have nature on my side; if I do not succeed to impress upon you its utility and great, importance to mankind, it will reflect that much less credit upon our generation, upon scientific men and philosophers. "

" Fearless I do not hesitate for a binary arithmetic and metrology enter. I know the nature on my side. If I can not convince you of its usefulness and great importance for humanity, which raises just not a good sign for our generation, their scientists and their philosophers. "

Nystrom suggested separate numerals for its hexadecimal numbers or digits.

The " tonal system " called the number zero " noll " and then went on counting ( from one to sixteen): " An, en, ti, go, see below, by, ra, me, ni, ko, hu vy, , la, po, fy, sound. " ( Why tonal system. ) The numbers " sixteen - and - one", " sixteen - two " and so on should therefore be called "ton -an", "ton -de " etc..

The proposal of a hexadecimal system of measurement had just as little success as the proposal to separate numerals.

Duodenal system

In 1875 Nystrem then suggested a duodezimales system, which he described as duodenal system.