June 10

From Gnomon Chronicles
Jump to navigation Jump to search


Better Than News

Beyond Plausible

In Other Words

Are You Sure

... that mathematician and astronomer Abū al-Wafā' Būzjānī made important innovations in spherical trigonometry; that his work on arithmetics for businessmen contains the first instance of using negative numbers in a medieval Islamic text?

Selected Anniversaries

Topic of the Day

Tardigrades