The first "friction match" was invented by English chemist John Walker in 1826. These first matches were sold as lucifer matches. Lucifers reportedly could ignite explosively, sometimes throwing sparks at a considerable distance. In the Netherlands matches are still called lucifers. Canon Rebel XTi, 1/3 sec @ f/8.0, ISO 200, 65mm MP-E macro mounted on a tripod.
From 365 Project The Air Force Memorial in glows against low hanging clouds and mist. Located on a promontory in Arlington, Virginia, overlooking the Pentagon and adjacent to Arlington Cemetery, the memorial's three 270 feet tall stainless arcs evoke the spirit of flight. Taken with a Canon 40D, 5.0s exposure at f/8.0, ISO 200, 28mm equivalent focal length, mounted on a tripod.