what invention was made by mistake?

Answer 1

chocolate chip cookie, ice cream cone, and potato chip to name a few.

See my source!!!

Answer 2

Coca-Cola was the result of an accident. In 1886 a pharmacist named John Pemberton cooked up a medicinal syrup in a large brass kettle slung over an open fire, stirring it with an oar. When he was done, he figured he had created a fine tonic for people who were tired, nervous, or plagued with sore teeth. He and his assistant mixed it with ice water, sipped it, and proclaimed it tasty. They wanted some more, and the assistant accidentally used carbonated water to mix the second batch. Voila! Instead of medicine, these men had created a fizzy beverage--one that is now consumed around the world.

Yellow sticky notes, officially known as Post-it Notes, got their start in 1968 when a 3M researcher tried to improve adhesive tape. What he got was a semisticky adhesive--not exactly what you want out of tape. Even so, he knew he had something cool--he just didn't know what to do with it. Four years later, another 3M scientist was getting frustrated. This scientist was a member of his church choir, and he kept dropping the bookmarks stuck in his hymnal. What he needed was something that would stick without being too sticky--something just like that weak glue his colleague had accidentally created. In 1980 the Post-it Note became an official product and a huge hit.

Another 3M scientist came up with a cool substance called Scotchgard, which helps prevent dirt from staining fabric. But that wasn't what she set out to create: Scotchgard grew out of an attempt to make a synthetic rubber to be used in airplane fuel lines. One day some of the new substance spilled on her assistant's canvas shoe, and they couldn't get it off. As the tennis shoe grew older, it got dingy--everywhere except where the substance had spilled. It took three more years of tinkering, but they had their Scotchgard.

Rubber got its name when English scientist Joseph Priestley discovered that a wad of it was good at "rubbing out" pencil mistakes on paper. But the rubber really hit the road--literally--when someone figured out how to stabilize it for use in boots, tyres, and the like. The problem was that rubber melted if it got too hot and shattered if it got too cold. A colourful character named Charles Goodyear tried to fix this problem in several ways, but it wasn't until (according to legend) he accidentally dropped a blob of rubber and sulfur on a hot stove that he found something that worked. Goodyear denied this was a mistake, but the point is that he had the savvy to know he was on to something good.

Rubber shortages during World War II prompted the U.S. government to look for a synthetic rubber. It seemed like a good idea to try to make this substitute for rubber out of something plentiful, and researchers eventually settled on silicone. An inventor at General Electric added a little boric acid to silicone oil and developed a gooey, bouncy substance. This substance failed as a substitute for rubber, but after the war it became an extremely popular toy known as Silly Putty. Apollo 8 astronauts later used it to stabilize their tools in zero gravity. (The astronauts carried their Silly Putty in sterling silver eggs.) Today, Binney & Smith (the company that makes Silly Putty) produces 20,000 eggs' worth of Silly Putty a day.

Answer 3

shoe rubber was made when they were trying to make tires for the first time and couldnt get the rubber to take the circular shape of a wheel.

Answer 4

Not really an invention but penicillin was found serendipitously.

Answer 5

the usefullness of Microwaves was discovered when a scientist (his name eludes me at the moment) was experimenting with them and the Hershey's chocolate bar that he had in his coat pocket melted.

That's a fun little factoid :)

Answer 6

Lexan
Silly Putty
Champagne
probably Fire