New answers tagged

0 votes

How did Eratosthenes determine that Alexandria and Syene were on the same meridian?

here's another thought on the "same meridian" problem. arguably, the two cities not being on the exact same meridian would be made less relevant by Eratosthenes' requirement that the ...
John Noble's user avatar
6 votes

How did Scott and Amundsen detect the South Pole?

I want to add to this answer some details about "measuring latitude". The instruments used are sextant (for measuring altitude of a star (or Sun or Moon) over the horizon, and chronometer ...
Alexandre Eremenko's user avatar

Top 50 recent answers are included