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His theory said that matter is made of tiny, indivisible particles. He also said that atoms of different elements had different weights.
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Built by George Stephenson.
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All the known elements were arranged according to their atomic weight.
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The invention of dynamo led to invention of electrical generators
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Walter Hun invented the useful, everyday device known as the safety pin
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This book considered his theory 'The survival of the fittest'
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Alexander Graham Bell was a scientist and inventor best known for inventing the first working telephone.
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Gottlieb Daimler and Carl Benz developed the world's first automobiles in Mannheim (Benz) and Stuttgart (Daimler).
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It was invented in 1851 by Elias Howe to the "Clasp Locker" patent in 1893 and marketed by Mr. Whitcomb Judson as the zipper we know today.
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They won a nobel prize for their work on radioactivity.