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.
Runtime: 18:14 minutes
Quality: HD
First air date: Jan 01, 1991
Last air date: Jan 01, 1993
Episode: 5 Episode
Season: 1 Season
IMDb: 10
Keywords:physics
