Operation «Helium»
Release Date: 1993-02-01
⭐ 0.0
On the example of the history of the discovery of the "solar substance" Helium, the history of the most important discoveries in the field of physics and chemistry of the early XX century is given.
Release Date: 1993-02-01
⭐ 0.0
On the example of the history of the discovery of the "solar substance" Helium, the history of the most important discoveries in the field of physics and chemistry of the early XX century is given.
