Home   69   200   300   400   500   600   700   800   900   1000   1100   1200   1300   1400   1500   1600   1700   1800   1900

 


Search for text:
Date Range From:
Year
Month
Day
Date Range To:
Year
Month
Day

Names Index

Entries Index

Places Index

1288 - 1344 (6 Iyar 5104) LEVI BEN GERSHON RALBAG

Rabbi, mathematician, astronomer, philosopher and biblical/talmudic commentator. In his Milchamot Hashem (Wars of the Lord) he elaborated on his own conception of Maimonides' philosophy. He tried to explain miracles through laws of nature. As an astronomer, he influenced Copernicus and is reputed to be the inventor of the "Jacob's Staff", a quadrant used for centuries by navigators. He also wrote a commentary on the Bible and reportedly invented the "camera obscura", which threw images on a screen and was the forerunner of the modern camera.




© 1996 - 2015. This material is copyrighted and cannot be used without the permission of the author.