#OTD 24 April

Eratosthenes was a Greek polymath. He devised an algorithm for identifying primes (the sieve of Eratosthenes). His calculation of the earth’s circumference was known of but rejected by, Columbus, who reckoned about 25% less. Had Columbus accepted the calculation, he may well have founded a new world and not, as he believed, Asia. Eratosthenes was… Continue reading #OTD 24 April

#OTD 19 April

On 19 April 1770, Captain Cook’s Endeavour sighted mainland Australia. As Cook recorded in his journal: I have named it Point Hicks, because Leuit Hicks [sic] was the first who discover’d this land…” On 19 April 1984, Australia adopted Advance Australia Fair as its national anthem. The song has itself provided a national self-discovery of sorts.… Continue reading #OTD 19 April