Inventions Trivia: Who Really Invented What?

Invention questions are quiz favourites because the answers are often surprising — and the credit is often disputed. Many famous inventions were built on the work of others, improved by several people at once, or discovered completely by accident. Here are 20 facts worth knowing, with the stories that make them stick.

World-Changing Ideas

1. Johannes Gutenberg developed a movable-type printing press in Germany around the 1440s. Books became far cheaper, helping to spread the Renaissance, the Reformation and the scientific revolution. (Movable type itself was invented earlier in China and Korea.)
2. Alexander Graham Bell received the first US patent for the telephone in 1876. Others, including Elisha Gray and Antonio Meucci, were working on similar devices, and the question of credit is still debated.
3. Thomas Edison did not invent the light bulb. Inventors such as Joseph Swan had made working bulbs earlier. Edison's team developed a long-lasting, commercially practical bulb and — just as important — a system to power it.
4. The Wright brothers made the first sustained, controlled, powered aeroplane flight at Kitty Hawk, North Carolina, on 17 December 1903. The first flight lasted 12 seconds.
5. Tim Berners-Lee invented the World Wide Web in 1989 while working at CERN. The web and the internet are different things: the internet is the network; the web is a way of sharing pages over it.
6. Karl Benz built what is widely considered the first practical petrol-powered car, patented in 1886. His wife Bertha made the first long-distance car journey to show it worked.
7. Guglielmo Marconi pioneered long-distance radio communication, sending a signal across the Atlantic in 1901.

Happy Accidents

8. Penicillin was discovered by Alexander Fleming in 1928, after mould contaminated one of his bacteria dishes and killed the bacteria around it.
9. The microwave oven began when engineer Percy Spencer noticed a chocolate bar melting in his pocket while he worked near radar equipment in the 1940s.
10. Post-it Notes came from a "failed" adhesive. A 3M scientist created a weak, reusable glue; years later a colleague used it to stop bookmarks falling out of his hymn book.
11. X-rays were discovered by chance in 1895, when Wilhelm Röntgen noticed a screen glowing while he experimented with cathode rays. He won the first Nobel Prize in Physics.
12. Velcro was inspired by burrs. Swiss engineer George de Mestral noticed seeds clinging to his dog's fur after a walk and studied the tiny hooks under a microscope.
13. Safety glass came about after French chemist Édouard Bénédictus dropped a glass flask coated in plastic and noticed it cracked but did not shatter.

Everyday Essentials

14. The wheel is one of humanity's oldest inventions, dating back more than 5,000 years in Mesopotamia — and it was probably used for pottery before transport.
15. Paper was developed in China; Cai Lun, an official of the Han dynasty, is traditionally credited with improving it around 105 AD.
16. Marie Curie was not an inventor in the usual sense, but her research into radioactivity earned her Nobel Prizes in both Physics (1903) and Chemistry (1911) — the only person to win in two different sciences.
17. The first computer programmer is often said to be Ada Lovelace, who wrote an algorithm in the 1840s for Charles Babbage's proposed Analytical Engine.
18. The ballpoint pen as we know it was developed by László Bíró, a Hungarian journalist, in the 1930s. In many countries a ballpoint is still called a "biro".
19. The telephone, television and computer all have disputed "inventors" — a reminder that most big inventions are the work of many people over many years.
20. The zip fastener took decades to perfect. Gideon Sundback's design of 1913 is the basis for zips today.

Why the Credit Is So Often Disputed

In the real world, inventions rarely appear from nowhere. Several people often work on the same idea at the same time, and the person remembered is usually the one who made it practical, patented it, or sold it successfully. Quiz writers enjoy this, so watch out for questions like "Who invented the light bulb?" — the expected answer may depend on how the question is worded.

How to Remember Inventors

Link each inventor to a story rather than a date. A melting chocolate bar means microwave. A mouldy dish means penicillin. A dog covered in burrs means Velcro. The story is what stays with you, and the date often follows.

Keep a few of these in mind and any inventions question becomes easy points. Ready to test yourself? Try the free Great Inventions quiz.