Like the measurements of Aristarchus and Eratosthenes, this calculation of Alhazen is simple enough in theory.
Even Skoropikin, you know, our immortal Aristarchus, rings his praises.
Aristarchus—a ring-plain nearly thirty miles in diameter, the floor of which is 5000 feet below the surface level.
You seem to have some trouble on your mind, Aristarchus; if so, you should share it with your friends.
They would have quieted his mind, too, about the celebrated speech of Aristarchus.
Aristarchus answered: Yes, Socrates, I am in sore straits indeed.
It certainly accounts for the volcanic activity which has so often been supposed to be manifested by Aristarchus.
Aristarchus and Dionysius the Thracian say that he was an Athenian.
From Cape Heraclides to Aristarchus the distance in an air line was something over 300 miles.
Others, such as Aristarchus, were spitted on their own critical signs of disapproval.