All Questions
Tagged with navigation history
2
questions
8
votes
1
answer
277
views
What is a glass artificial horizon?
On Amundsen's polar expedition they had,
Of instruments and apparatus for the sledge journeys we carried two sextants, three artificial horizons, of which two were glass horizons with dark glasses, ...
- 69.4k
56
votes
3
answers
15k
views
How do you know you have reached North or South Pole without GPS?
Having read about the recent foot traverse of Antarctica by Colin O'Brady I was wondering which means the polar explorers of former, pre-GPS times used to determine that they had reached the North or ...
- 7,542