Fire Fact Friday – Ancient Fire April 2, 2021 by Thor in News 378 The ancient Greeks started fire with concentrated sunlight. A parabolic mirror that focuses solar rays is still used to ignite the Olympic torch. https://www.smithsonianmag.com/innovation/your-burning-questions-about-olympic-torch-answered-180968120/ Share on Facebook Share Share on TwitterTweet Share on Pinterest Share Share on LinkedIn Share Send email Mail
