Top 10 Inventions Made by Mistake

Metal_Treasure

The Top Ten

1 The First Practical Implantable Pacemaker
2 X-Ray Images
3 Penicillin Penicillin

@visitor - it was a discovery at the first stage and invention at the second stage (medical application and production). Nobody uses Penicillin in the form it was discovered (food contaminated by blue-green mould). An example of discovery is that Earth is round but there's no 2nd stage - nobody tries to make Earth triangle so that we can use it in a more convenient way. - Metal_Treasure

Well Alex had been playing around with mole colonies when he discovered a whacky substance made by them which prevented the growth of microbes.he then thought," why not make money! "(he thought about its applications in science and experimented on animals and then invented penicillin.he wasn't interested in making money.that was a joke...which I spilt) - Toucan

A discovery. Not an "invention."

4 Plastics
5 Microwave Oven

It was accidentally discovered in 1945 by Percy Spencer, an American self-taught engineer. He was working on an active radar set and noticed that microwaves from the radar started to melt a candy bar in his pocket. And he decided to use the specific heating effect of the high-power microwave beam.
The first food deliberately cooked with Spencer's microwave was popcorn, and the second was an egg, which exploded in the face of one of the experimenters. - Metal_Treasure

6 Anesthesia
7 Viagra

Viagra (Sildenafil) was meant to treat heart diseases: hypertension (high blood pressure) and angina pectoris (a symptom of ischaemic heart disease).
The first clinical trials suggested the drug had little effect on angina but induced marked penile erections. - Metal_Treasure

8 Artificial Sweetener (Saccharine)

The artificial sweetener was discovered in 1879 because chemist Constantin Fahlberg didn't wash his hands. - Metal_Treasure

9 Vulcanized Rubber
10 The Slinky

The Contenders

11 Coca Cola

It was meant to be a medicine. - Metal_Treasure

12 Aspirin

This was invented from a mistake. but still it helps us lot! - zxm

Again, a discovery.

13 Post-it Notes
14 Potato Chips
15 Corn Flakes
16 Ink-jet Printer
17 Chocolate-chip cookies

Result of a recipe gone wrong. - Metal_Treasure

18 Tea Bags
19 Ice Cream Cone
20 Champagne

It was bottled wine that didn’t ferment properly. - Metal_Treasure

21 Chewing gum

It was supposed to be a natural latex. - Metal_Treasure

22 Popsicle
23 Stainless Steel
24 Dynamite
25 Teflon
26 Smart Dust
27 Play-Doh
28 Super Glue
29 Velcro
30 Safety Glass
31 Fireworks
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