6 Genius Inventions that were Invented By Mistake

6 Genius Inventions that were Invented By Mistake 7. Penicillin 8. Microwave 9. X-rays 10. Pacemaker 11. Super glue 12. Post-it notes ;6 Amazing Inventions that were Created By Accident and Changed the World Forever 7. Penicillin - The first antibiotic discovered by Alexander Fleming in 1928 when he accidentally left a petri dish uncovered. 8. Microwave - Percy Spencer accidentally discovered microwave cooking when a chocolate bar in his pocket melted while working with radar equipment. 9. X-rays - Wilhelm Roentgen discovered X-rays in 1895 while experimenting with cathode rays and noticed a mysterious glow on a screen nearby. 10. Pacemaker - Wilson Great batch invented the implantable pacemaker in 1958 when he mistakenly installed the wrong resistor in a circuit. 11. Super glue - Harry Coover invented super glue in 1942 while trying to create clear plastic gun sights, but ended up with a sticky substance instead. 12. Post-it notes - Spencer Silver accidentally created the adhesive for post-it notes in 1968, but it wasn't until his colleague, Art Fry, realized its potential as a bookmark that it became a popular product.

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