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
2010 Winter Olympics torch relay of the four torchbearers lit the indoor Olympic Cauldron; Le May Doan remained with her torch due to a malfunction causing only three of the four arms to be raised. Gretzky exited BC Place, with his torch still lit, and caught a ride on the back of a VANOC vehicle, to Coal Harbour, where he lit the outdoor Cauldron. This makes Gretzky the first person to light two official cauldrons in the same Olympics. At the start of the closing ceremony, Le May Doan re-lit the indoor Cauldron after clown and mime Yves Dagenais "fixed" and "raised" the arm that