Stamp: Josef Stefan (1835-1893) physicist (Austria 1985)
Josef Stefan (1835-1893) physicist (Austria 1985)
22 March (Austria ) within release Stefan, Prof. Josef goes into circulation Stamp Josef Stefan (1835-1893) physicist face value 6 Austrian schilling
| Stamp Josef Stefan (1835-1893) physicist in catalogues | |
|---|---|
| Michel: | Mi:AT 1807 |
| Yvert et Tellier: | Yt:AT 1636 |
Stamp is vertical format.
Joseph Stefan (Slovene: Jožef Stefan) was a Carinthian Slovene physicist, mathematician, and poet of Austrian citizenship.Stamp Josef Stefan (1835-1893) physicist it reflects the thematic directions:
One of the earliest known mathematicians was Thales of Miletus (c. 624 – c. 546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed.He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales's theorem.
