Iyar 6, 5104 (1344)
DUST AND STARS--TODAY IN JEWISH HISTORY (Abridged)
Iyar 6, 5104 (1344):
Yahrzeit of Rabbi Levi ben Gershom (Ralbag; also known as Gersonides), philosopher, exegete, astronomer and author. As an astronomer, he influenced Copernicus and invented the "Jacob's Staff", a quadrant used for centuries by navigators. He also reportedly invented the "camera obscura" which threw images on a screen and was the forerunner of the modern camera.
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