💡 Inventions quiz

Earle Dickson made them in 1920 for his wife, who often cut herself cooking. Johnson & Johnson started selling them in 1921.

Engineer Richard James got the idea when a spring fell off a shelf. All 400 Slinkys at a Philadelphia store sold out in about 90 minutes.

Raytheon's first 'Radarange' was nearly 6 feet tall and cost about $5,000. Its inventor noticed radar waves melted a candy bar in his pocket.

Businessman Frank McNamara came up with it after forgetting his wallet at a New York restaurant.

Swiss engineer George de Mestral got the idea from burrs that stuck to his dog's fur on a hike.

Its inventors were trying to make textured wallpaper. It found its calling later as packing material.

It opened at a Barclays bank in London on June 27, 1967. Customers used paper vouchers, since bank cards with magnetic stripes came later.

Hungarian architecture professor Ernő Rubik made it as a teaching tool, and it took him about a month to solve it himself.

A 3M scientist trying to make a super-strong glue accidentally made a weak one, which turned out to be perfect for sticky notes.

A Japanese company created it to track car parts in factories. It was inspired by the black and white stones of the board game Go.