This September marks 86 years since scientist Alexander Fleming discovered penicillin in 1928.
Unlike many inventions that come about from years of research and hard work, penicillin was an unexpected discovery. When Fleming, a professor of bacteriology, returned home from his two-week vacation, he began sorting through his petri dishes. He noticed mold had formed on his staphylococcus samples. This mold was actually a strain of Penicillium notatum which inhibited bacterial growth. The modern era of medicine hasn't been the same since.
Over the course of history, Fleming's discovery wasn't the only "accidental" invention. Albert Einstein said, “Anyone who has never made a mistake has never tried anything new.” You'll never know when an error may turn into a life-saving treatment or a Nobel Prize-winning invention.
Not all inventions have been successful. Here are some bizarre inventions that will make you wonder what their inventors were thinking!
1. A fold-up piano, designed for bedridden patients, Britain, 1935: