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Solucionar las épocas para este rompecabezasFotoThe 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. Share this Jigsaw Puzzle | Rompecabezas recientesFri Four Tin SoldiersThu White Tiger Jungle PoolWed Winter GlobeTue Cat Check VortexLunes Dead Tree Blue SkySol Baby Peach FluffSentado Leopard Gecko Basking Rompecabezas más anteriores | |
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