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Dynamite | Definition, Inventor, Facts | Britannica dynamite, blasting explosive, patented in 1867 by the Swedish physicist Alfred Nobel Dynamite is based on nitroglycerin but is much safer to handle than nitroglycerin alone By mixing the nitroglycerin with kieselguhr, a porous siliceous earth, in proportions that left an essentially dry and granular material, Nobel produced a solid that was resistant to shock but readily detonable by heat or