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 opening ceremony stadium through to the Olympic cauldron, which at this moment was still not shown. As he ran along the upper wall of the stadium, the projection displayed a scroll opening ahead of him, on which was beamed footage of previous torch relays around the world. At the final moment, a spotlight revealed the final resting place of the Olympic flame, which had appeared during the torch run. A colossal torch situated at the top of the stadium was lit by a proportionately large fuse. A flurry of spectacular fireworks of various colours and shapes, some projecting Olympic rings, others forming