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
2015 Pan American Games torch relay by torch relay communities and games partners. The torch took a 41-day journey after being lit in May 2015 at the pyramids of Teotihuacan, Mexico. The torch was brought through a total of 130 communities, mostly in Ontario (with five outside the province, Richmond, Winnipeg, Calgary, Halifax and Montreal). The torch was carried by about 3,000 torchbearers and travel approximately . The relay began on May 30, 2015 in Toronto and finished on July 10, the date of the opening ceremony. The detailed torch relay route and celebration sites were announced on February 24, 2015. The torch arrived in Toronto