1 gen 1926 anni - Wolfgang Pauli and Erwin Schrödinger show that the Rydberg formula for the spectrum of hydrogen follows from the new quantum mechanics Partial oxidation, Vandeveer and Parr at the University of Illinois used oxygen in the place of air for the production of syngas. Cyril Norman Hinshelwood described the phenomenon of chain reaction. Umberto Nobile made the first flight over the north pole with the hydrogen airship Norge
Aggiunto al nastro di tempo:
Data:
1 gen 1926 anni
Adesso
~ 99 years ago