FILE 001Inventions🔧burned down by angry tailorsThe sewing machine was so controversial that inventor Barthélemy Thimonnier's factory was burned down by angry tailors afraid of losing their jobs.SrcSmithsonianPass the claimOpen file
FILE 002Inventions💡Sharechocolate bar melting in his pocketThe microwave oven was invented by accident when engineer Percy Spencer noticed a chocolate bar melting in his pocket near radar equipment.SrcSmithsonian
FILE 003Inventions🔧Share2,000-year-old clay jarsThe first batteries were possibly 2,000-year-old clay jars found near Baghdad — called "Baghdad Batteries" — though their purpose is debated.SrcSmithsonian
FILE 004Inventions💡Share22 yearsThe zipper took 22 years from invention to widespread adoption — people didn't trust it at first.SrcSmithsonian
FILE 005Inventions💡ShareSpace ShuttleVelcro was banned from use on the Space Shuttle exterior because tiny hooks could damage instruments — but it's used extensively inside.SrcNASA