In the standard account of Eratosthenes' calculation of the Earth's circumference, at which city did he measure a noon shadow for comparison with the nearly overhead Sun at Syene on the summer solstice?
Alexandria
Alexandria. A vertical object there cast a noon shadow when the Sun was nearly overhead at Syene. The approximately 7.2° angular difference was one-fiftieth of a full circle; combining it with the distance between the cities gave an estimate of the Earth's circumference.
Important Questions from Miscellaneous
Which event is marked as an Intangible Cultural Heritage of Humanity by UNESCO?
Who has been conferred with the rank of the Commander of the Order of the British Empire in 2018?
Who directead the film ‘Bhuvan Shome’?
The book “In my mother’s house” is written by _______
In which state is Vishwa Mitra Ka Tila situated?
