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Foto4.3 / 670 votes The first "friction match" was invented by English chemist John Walker in 1827. Early work had been done by Robert Boyle in the 1680s with phosphorus and sulfur, but his efforts had not produced useful results. Walker discovered a mixture of antimony sulfide, potassium chlorate, gum, and starch could be ignited by striking against any rough surface. | Rompecabezas recientesFri Three MilkshakesThu Crazy Mountain BikerWed Lion PortraitTue Fantasy Ice CreamLunes Weird Yoga GroupSol Dogs Playing PokerSentado Red Squirrel Bird Rompecabezas más anteriores | |||||||
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