Burning glass extremely high temperatures without the need for fuel or large supplies of electricity. They sometimes employ a large parabolic array of mirrors (some facilities are several stories high) to focus light to a high intensity. The Olympic torch that is carried around the host country of the Olympic Games is lit by a burning glass, at the site of ancient Olympia in Greece. Burning glass A burning glass or burning lens is a large convex lens that can concentrate the sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning
2008 Summer Olympics torch relay stifle dissent." The three activists and five supporters face charges related to trespassing, conspiracy and causing a public nuisance. The torch was lit at a park outside at AT&T Park at about 1:17 pm PDT (20:17 UTC), briefly held aloft by American and Chinese Olympic officials. The relay descended into confusion as the first runner in the elaborately planned relay disappeared into a warehouse on a waterfront pier where it stayed for a half-an-hour. There were clashes between thousands of pro-China demonstrators, many of whom said they were bused in by the Chinese Consulate and other pro-China groups, and both