Behar 5784: The Blessings of Imperfection (GOA Graduation Address)

In Philadelphia hangs a famous bell with a great crack running down its side. The Liberty Bell is inscribed with the King James translation of a verse from this week’s Torah portion, Behar: “Proclaim Liberty Throughout All the Land Unto All the Inhabitants thereof.” This bell was commissioned in 1752 to celebrate fifty years since…

Adaptive Optics: Behar-Behukotai 5773/2013

The other night I read a magazine article on the construction of the Giant Magellan Telescope (GMT), an international collaboration to construct the greatest earth-based observatory up in the Andes Mountains in Chile.  The technology involved in manufacturing the massive set of primary mirrors, with an effective diameter of 24.5 meters (80 feet), is remarkable,…