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
2016 Summer Olympics opening ceremony and Gilberto Gil performed the song "Sandália de Prata", by Ary Barroso. The segment was a tribute to Rio's most famous signature event; the Rio Carnival, which happens on the last four days before Ash Wednesday. Ending the Olympic torch relay at the end of the Opening Ceremony, Gustavo Kuerten brought the Olympic torch into the stadium, relayed the Olympic flame to Hortência Marcari, who relayed to Vanderlei Cordeiro de Lima, who then lit the Olympic cauldron. The cauldron was lit by Vanderlei Cordeiro de Lima, marathon bronze medallist at the 2004 Summer Olympics and recipient of Pierre de Coubertin