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
1968 Summer Olympics torch relay arrived just outside San Salvador at the original landing site of Columbus's first voyage. A celebration organised in conjunction with the Bahamas Olympic Association marked the first time that the Flame had been to the New World. At the end of the festivities the Flame was taken aboard the Mexican destroyer ARM "Durango". The ship arrived in Veracruz on 6 October with the torch being swam ashore by a relay of seventeen swimmers. From there the Mexican runners started their journey, and the Flame arrived at the Olympic Stadium Estadio Olímpico Universitario on 12 October. In total the relay spanned