‘helium’ historical pictures (exact matches)

Airship
Airship
Pierre Janssen, French astronomer
Pierre Janssen, French astronomer
The 'spectroscope' used by Lockyer in his discovery of helium
The 'spectroscope' used by Lockyer in his discovery of helium
L'ultima trovata americana, il pallone bebe che, gonfiato con l'elio, permette a chi vi si attaca …
L'ultima trovata americana, il pallone bebe che, gonfiato con l'elio, permette a chi vi si attaca …
Photographing an atom in flight
Photographing an atom in flight
M Curie chatting with Sir William Ramsay
M Curie chatting with Sir William Ramsay
Gas cells of irship LZ130 half filled
Gas cells of irship LZ130 half filled
Route to the Moon: The Tragic Story of the Airship
Route to the Moon: The Tragic Story of the Airship