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
Olympic flame a city near Rio de Janeiro, managed to put out the Olympic flame when protesting against the city's spending money on hosting the games, despite the economic crisis that took hold of Brazil. It is not uncommon for the Olympic flame to be accidentally or deliberately extinguished during the course of the torch relay (and on at least one occasion the cauldron itself has gone out during the Games). To guard against this eventuality, multiple copies of the flame are transported with the relay or maintained in backup locations. When a torch goes out, it is re-lit (or another torch