Nitrogen gas (density 1.251 g/L at STP, average atomic mass 28.00 g/mol) is about 3% lighter than air, insufficient for common use as a lifting gas.
yearsToGoTilFusion = prediction x 10
Airships will never be a viable proposition; trucks and ships are always cheaper, winged planes are always faster.
It is NOT a fuel!
There is plenty of free helium is sight most days.!
Lady Hay was no longer alone in her cabin; she had found a new companion who was now sleeping soundlessly on her bed. Though the Graf was searched carefully immediately prior to departure [from Germany], a stowaway of sorts successfully eluded discovery until earlier that day. Hungry, shivering, and distressed. a small black kitten was found in the depths of the ship's vast and complex interior by a rigger on a tour of inspection, and with Dr Eckener's blessing it was brought to the only woman on board for a little necessary care and affection.
...there was one unhappy note. The little black cat which had been the ship's mascot on the flight to Tokyo was missing. It had disappeared during the first day at Kasumigaura, and an intensive search had failed to find it. It now seemed likely it had walked off the ship after landing and chosen to take up residence in Japan.
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