7 amazing inventions discovered by mistake


7 amazing inventions discovered by mistake
  • Some of these things have been around for nearly 200 years.
  • All were "discovered" by accident.
  • The term "Eureka!" actually became the state motto of California during the gold rush.

There are times when a researcher, scientist, or just a common, everyday tinkerer accidentally makes something that wasn't quite what she or he had in mind, but ends up leading to an invention that becomes ubiquitous across the world.

Here are seven "fortunate accidents" in science and the iconic items that came out because of them:

1. The Pacemaker

An artificial pacemaker (serial number 1723182) from St. Jude Medical, with electrode. Image source: Wikimedia Commons

"I'm beginning to think I may not change the world, but I'm still trying," Wilson Greatbatch, Inventor, 2007.

In fact, Mr. Greatbatch had indeed changed the world, after having invented a device by mistake that would save the lives of millions of people.

He'd been working on a device to record the rhythm of a human heartbeat. In 1956, as he was trying to finish the circuit where he worked at the University of Buffalo as an assistant professor, he accidentally grabbed the wrong sized resistor and used it instead. This was one of those "fortuitous" accidents, as it turned out. The intermittent electrical impulses that the device created because of that final resistor were very much like the sounds of a human heartbeat.

Seeing the value of such a device, he immediately set to work trying to make it small enough to fit inside a human. There were other research labs doing the same, so he worked urgently to get it done — documented in the book he wrote about the experience, The Making of the Pacemaker. His 2-inch device was debuted in testing on dogs in 1958 at the Buffalo Veterans Administration, and eventually, his device was licensed by Medtronic, and the rest, as they say, is history.

Greatbatch, seeing the biggest limitation of his pacemaker device hinge on the 2-year battery life, later acquired the rights to a lithium iodide battery, which would make his design last 10 years or more, and he redesigned it — the original version was potentially "explosive" — and later, his redesigned battery was adapted in countless medical devices, and still is.

2. Corn Flakes

Close-up, Corn Flakes cereal. Image source: Flickr user Marko Verch

The Kellogg brothers — John and Will — both worked in a Battle Creek, Michigan, sanitarium (what they used to call long-term care). In fact, John was physician-in-chief.

Their religion, Seventh-Day Adventist, preached vegetarianism and avoidance of alcohol as central concepts; as such, the Kellogg brothers sought to find ways to help patients through nutrition.

That's why they had some dough on hand one day, made up of whole wheat, and accidentally let it dry too much. When that dried mixture was in the process of being flattened, it separated into pieces, or flakes. Like they always did with their doughs and bread mixtures, they heated that in an oven to see what would happen.


A few years later, the base was changed to corn from wheat, and Corn Flakes were born.

3. Microwave Ovens

Man in wheelchair preparing to use microwave. Image source: PublicDomainFiles.com

Since they were accidentally invented in about 1945 these devices have changed the way we live.

(Flashback to my college days... after chugging down too many beers at the local bar where bodies were squeezed into tiny spaces and conversations were always shouted into ears, we'd always hit the 7-Eleven and get cheaply-made microwaved burritos. They didn't suck. Good times.)

But I digress.

Percy L. Spencer, widely known as an electronics genius after his stint in the Navy in WWI, was working for Raytheon in 1939, and his ideas and knowledge about radar helped the company win a government contract to develop the new technology and deploy it as "combat radar." Especially as WWII was on the horizon, this was actually the second highest priority project for the military only after the Manhattan Project.

Radar arrays use magnetrons — invisible, super-energetic, short-wavelength radio waves that travel at the speed of light — to function, and while testing radar equipment that had such, Spencer felt a strange sensation in his pants.

Specifically, a chocolate bar had melted when exposed to the waves created. He tested other foods, and when he discovered that the waves could pop popcorn all on their own, that was it.

Being the smart man he was, he quickly figured out how to create, patent, and then bring to market his invention. They began life as very large and costly devices, only being used on ships, trains, and in some restaurants; it wasn't until 1967 that the first commercial microwave was made successfully for home use.

The rest is... convenient and delicious.

4. Recreational LSD —  Lysergic Acid Diethylamide

Alice In Wonderland, tripping heavily.

From Dazed.com, "Your Guide To A Safe Acid Trip"

On November 16, 1938, Swiss chemist Albert Hofmann was attempting to create an analeptic compound to help people coming out of anesthesia, which also could potentially help premature infants keep breathing properly.

To get there, he attempted to combine the stimulant diethylamide with lysergic acid. Having failed, the experiment was set aside for 5 years.

The next time he returned to it on April 16, 1943. After creating the combination of the two, he accidentally ingested some, probably from a careless fingertip. He described the resultant sensations as being in his journal:

"... affected by a remarkable restlessness, combined with a slight dizziness. At home I lay down and sank into a not unpleasant intoxicated-like condition, characterized by an extremely stimulated imagination. In a dreamlike state, with eyes closed (I found the daylight to be unpleasantly glaring), I perceived an uninterrupted stream of fantastic pictures, extraordinary shapes with intense, kaleidoscopic play of colors. After some two hours this condition faded away."

Three days later, he dosed himself for an experiment with 250 micrograms of the material, in what forever will be known as Bicycle Day because the trip began while he was riding a bike home. He then freaked out, thought he was dying, summoned a doctor — who, shaking his head after hearing what he'd done, told him he couldn't help him — and then Hofmann finally settled in for a really pleasant trip and felt wonderful the next day. Also from his journal:

"I could begin to enjoy the unprecedented colors and plays of shapes that persisted behind my closed eyes. Kaleidoscopic, fantastic images surged in on me, alternating, variegated, opening and then closing themselves in circles and spirals, exploding in colored fountains, rearranging and hybridizing themselves in constant flux. It was particularly remarkable how every acoustic perception, such as the sound of a door handle or a passing automobile, became transformed into optical perceptions. Every sound generated a vividly changing image, with its own consistent form and color."

5. Kevlar

Helmet that saved an officer involved in the Pulse nightclub shooting, Orlando FL, 2016. Image source: Wikimedia Commons

Up until the fairly recent past, many inventions — both accidental and purposeful — created by women were stolen. That, or the role women played in the thing's creation was downplayed into oblivion.

Not so with Stephanie Kwolek, a chemist at DuPont. In 1965, after being asked by DuPont to create the "next generation" of fibers, she began attempting to create a material that would form stronger, lighter tires for use on vehicles.

She came across something that was lightweight, yet 5 times the strength of steel, and eventually, went on to create Kevlar.

The fibers have saved countless lives since then, in law enforcement, the military, and other places. And variations of it have gone on to be used for suspension bridges, to surround the underground fiber optic internet cables that connect the world, and so many other innovative projects.

Women in Chemistry: Stephanie Kwolek

6. Penicillin

Penicillin chemical illustration


Life before penicillin was much more brutal, deadly, and painful. Everything from pneumonia to rheumatic fever to gonorrhea all the way to blood infections and simple cuts that would lead to gangrene.

In 1928, penicillin was discovered — by Sir Alexander Fleming, a chemist and inventor who was, ironically, trying to create a miracle drug. The petri dish that the first discovered penicillin mold grew in was in a dish that had been left uncovered after other experiments had taken place using Staphylococcus aureus bacterium.

What he found was a ring of mold growth that had apparently killed the staph bacterium. Isolating the new discovery, however, and producing it in mass quantities, took until 1939, just before World War II.

7. Potato Chips

The box that eventually became standard. From OriginalSaratogaChips.com

There are a few different accounts of how potato chips were invented. There are even references to similar edible delights in cookbooks going back to the early 1800s.

But they became popular in upstate New York, near a town called Saratoga Springs, beginning in 1853.

A famous cook at Moons Lake House, George Speck, eventually to be known as George Crum, is said to have invented them one evening when a wealthy patron sent back the mushy slices of potatoes that he first made in exchange for something thinner cut. When the patron sent them back again, Crum sliced them incredibly thin and then fried them in oil and sprinkled salt on them afterward.

The gentleman love them and ordered more. Seven years later, "Saratoga Chips" were all the rage at both that restaurant and the new restaurant that George Crum founded, appropriately named Crums. He would serve them in boxes, and allow guests to take them homes as well.

George's sister, Katie Wicks, claimed after he passed that she was the one that invented them, from accidentally knocking a thin slice of potato into the deep fryer and then trying it out.

Whichever you believe, this accidental invention soon became the top-selling snack of all time across the United States.

This is what aliens would 'hear' if they flew by Earth

A Mercury-bound spacecraft's noisy flyby of our home planet.

Image source: sdecoret on Shutterstock/ESA/Big Think
Surprising Science
  • There is no sound in space, but if there was, this is what it might sound like passing by Earth.
  • A spacecraft bound for Mercury recorded data while swinging around our planet, and that data was converted into sound.
  • Yes, in space no one can hear you scream, but this is still some chill stuff.

First off, let's be clear what we mean by "hear" here. (Here, here!)

Sound, as we know it, requires air. What our ears capture is actually oscillating waves of fluctuating air pressure. Cilia, fibers in our ears, respond to these fluctuations by firing off corresponding clusters of tones at different pitches to our brains. This is what we perceive as sound.

All of which is to say, sound requires air, and space is notoriously void of that. So, in terms of human-perceivable sound, it's silent out there. Nonetheless, there can be cyclical events in space — such as oscillating values in streams of captured data — that can be mapped to pitches, and thus made audible.


Image source: European Space Agency

The European Space Agency's BepiColombo spacecraft took off from Kourou, French Guyana on October 20, 2019, on its way to Mercury. To reduce its speed for the proper trajectory to Mercury, BepiColombo executed a "gravity-assist flyby," slinging itself around the Earth before leaving home. Over the course of its 34-minute flyby, its two data recorders captured five data sets that Italy's National Institute for Astrophysics (INAF) enhanced and converted into sound waves.

Into and out of Earth's shadow

In April, BepiColombo began its closest approach to Earth, ranging from 256,393 kilometers (159,315 miles) to 129,488 kilometers (80,460 miles) away. The audio above starts as BepiColombo begins to sneak into the Earth's shadow facing away from the sun.

The data was captured by BepiColombo's Italian Spring Accelerometer (ISA) instrument. Says Carmelo Magnafico of the ISA team, "When the spacecraft enters the shadow and the force of the Sun disappears, we can hear a slight vibration. The solar panels, previously flexed by the Sun, then find a new balance. Upon exiting the shadow, we can hear the effect again."

In addition to making for some cool sounds, the phenomenon allowed the ISA team to confirm just how sensitive their instrument is. "This is an extraordinary situation," says Carmelo. "Since we started the cruise, we have only been in direct sunshine, so we did not have the possibility to check effectively whether our instrument is measuring the variations of the force of the sunlight."

When the craft arrives at Mercury, the ISA will be tasked with studying the planets gravity.

Magentosphere melody

The second clip is derived from data captured by BepiColombo's MPO-MAG magnetometer, AKA MERMAG, as the craft traveled through Earth's magnetosphere, the area surrounding the planet that's determined by the its magnetic field.

BepiColombo eventually entered the hellish mangentosheath, the region battered by cosmic plasma from the sun before the craft passed into the relatively peaceful magentopause that marks the transition between the magnetosphere and Earth's own magnetic field.

MERMAG will map Mercury's magnetosphere, as well as the magnetic state of the planet's interior. As a secondary objective, it will assess the interaction of the solar wind, Mercury's magnetic field, and the planet, analyzing the dynamics of the magnetosphere and its interaction with Mercury.

Recording session over, BepiColombo is now slipping through space silently with its arrival at Mercury planned for 2025.

Learn the Netflix model of high-performing teams

Erin Meyer explains the keeper test and how it can make or break a team.

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  • Instead of the 'Rank and Yank' method once used by GE, Meyer explains how Netflix managers use the 'keeper test' to determine if employees are crucial pieces of the larger team and are worth fighting to keep.
  • "An individual performance problem is a systemic problem that impacts the entire team," she says. This is a valuable lesson that could determine whether the team fails or whether an organization advances to the next level.
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Photo by Martin Adams on Unsplash
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