10 accidental inventions that changed our world


Fleming was a fun guy.1. Penicillin

Everybody knows the story – or at least, should – the brilliant yet notoriously absent-minded biologist Sir Alexander Fleming was researching a strain of bacteria called staphylococci. Upon returning from holiday one time in 1928, he noticed that one of the glass culture dishes he had accidentally left out had become contaminated with a fungus, and so threw it away. It wasn’t until later that he noticed that the staphylococcus bacteria seemed unable to grow in the area surrounding the fungal mould.

Fleming didn’t even hold out much hope for his discovery: it wasn’t given much attention when he published his findings the following year, it was difficult to cultivate, and it was slow-acting – it wasn’t until 1945 after further research by several other scientists that penicillin was able to be produced on an industrial scale, changing the way doctors treated bacterial infections forever.

Early microwaves: hot stuff.2. The Microwave
In 1945 Percy Lebaron Spencer, an American engineer and inventor, was busy working on manufacturing magnetrons, the devices used to produce the microwave radio signals that were integral to early radar use. Radar was an incredibly important innovation during the time of war, but microwave cooking was a purely accidental discovery.

While standing by a functioning magnetron, Spencer noticed that the chocolate bar in his pocket had melted. His keen mind soon figured out that it was the microwaves that had caused it, and later experimented with popcorn kernels and eventually, an egg, which (as we all could have told him from mischievous childhood ‘experiments’), exploded.

The first microwave oven weighed about 750lbs and was about the size of a fridge.

Ice ice baby3. Ice Cream Cones
This story is a perfect example of serendipity, and a single chance encounter leading to worldwide repercussions. It’s also rather sweet.

Before 1904, ice cream was served on dishes. It wasn’t until the World’s Fair of that year, held in St Louis, Missouri, that two seemingly unrelated foodstuffs became inexorably linked together.

At this particularly sweltering 1904 World’s Fair, a stall selling ice cream was doing such good business that they were quickly running out of dishes. The neighboring stall wasn’t doing so well, selling Zalabia – a kind of wafer thin waffle from Persia – and the stall owner came up with the idea of rolling them into cone shapes and popping the ice cream on top. Thus the ice cream cone was born – and it doesn’t look like dying out any time soon.

Lovely bubbly!4. Champagne
While many know that Dom Pierre Pรฉrignon is credited for the invention of champagne, it was not the 17th century Benedictine monk’s intention to make a wine with bubbles in it – in fact, he had spent years trying to prevent just that, as bubbly wine was considered a sure sign of poor winemaking.

Pรฉrignon’s original wish was to cater for the French court’s preference for white wine. Since black grapes were easier to grow in the Champagne region, he invented a way of pressing white juice from them. But since Champagne’s climate was relatively cold, the wine had to be fermented over two seasons, spending the second year in the bottle. This produced a wine loaded with bubbles of carbon dioxide, which Pรฉrignon tried but failed to eradicate. Happily, the new wine was a big hit with the aristocratic crowds in both the French and English courts.

To do: invent better glue5. Post-It Notes
The invention of the humble Post-It Note was an accidental collaboration between second-rate science and a frustrated church-goer. In 1970, Spencer Silver, a researcher for the large American corporation 3M, had been trying to formulate a strong adhesive, but ended up only managing to create a very weak glue that could be removed almost effortlessly. He promoted his invention within 3M, but nobody took any notice.

4 years later, Arthur Fry, a 3M colleague and member of his church choir, was irritated by the fact that the slips of paper he placed in his hymnal to mark the pages would usually fall out when the book was opened. One service, he recalled the work of Spencer Silver, leading to an epiphany – the church being a good a place as any to have one, I suppose – and later applied some of Silver’s weak yet non-damaging adhesive to his bookmarks. He found that the little sticky markers worked perfectly, and sold the idea to 3M. Trial marketing began in 1977, and today you’d find it hard to imagine life without them.

Imagine life without these.6. Potato chips/crisps
In 1853, in a restaurant in Saratoga, New York, a particularly fussy diner (railway magnate Cornelius Vanderbilt) repeatedly refused to eat the fries he had been served with his meal, complaining that they were too thick and too soggy. After he had sent back several plates of increasingly thinly-cut fries, the chef George Crum decided to get his own back by frying wafer-thin slices of potato in grease and sending them out.

Vanderbilt initially protested that the chef’s latest efforts were too thin to be picked up with a fork, but upon trying a few, the chips were an instant hit, and soon everybody in the restaurant wanted a serving. This led to the new recipe appearing on the menu as “Saratoga Chips”, before later being sold all over the world.

Everyone loves a slinky!7. The Slinky
What walks down stairs, alone or in pairs, and makes a slinkity sound? Well, originally it was just a spring falling off a desk. To be more precise, it was the desk belonging to marine engineer Richard James, who sometime in 1940 noticed that when the spring fell, it stumbled and tumbled across the floor for a while before laying to rest. After a few prototypes, the Slinky was ready to be introduced to toy stores in 1948, where it became one of the most popular and iconic toys of all time.

James’ wife Betty was the one who came up with the name “Slinky”, and has been CEO of the company since 1960. Over 250 million Slinkies have been sold worldwide, and they were even used as mobile radio antennae during the Vietnam war.

An invention from the heart8. The Pacemaker
Like penicillin, here is another accidental invention that continues to save lives to this day. American engineer Wilson Greatbatch was working on a gadget that recorded irregular heartbeats, when he inserted the wrong type of resistor into his invention. The circuit pulsed, then was quiet, then pulsed again, prompting Greatbatch to compare this reaction with the human heart and work on the world’s first implantable cardiac pacemaker.

Before the implantable version was used on humans from 1960 onwards, pacemakers had been based on the external model invented by Paul Zoll in 1952. These were about the size of a television and dealt out considerable jolts of electricity into the patient’s body, which often caused the skin to burn. Greatbatch also went on to devise a lithium-iodide battery cell to power his pacemaker.

Now that's what I call a sticky situation.9. Superglue
More sticky stuff, though this one was famous for its high adhesive value, unlike Silver’s Post-It Notes. Superglue came into being in 1942 when Dr Harry Coover was trying to isolate a clear plastic to make precision gun sights for handheld weaponry. For a while he was working with chemicals known as cyanoacrylates, which they soon realized polymerized on contact with moisture, causing all the test materials to bond together. It was obvious that these wouldn’t work, so research moved on.

6 years later, Coover was working in a Tennessee chemical plant and realized the potential of the substance when they were testing the heat resistance of cyanoacrylates, recognizing that the adhesives required neither heat nor pressure to form a strong bond. Thus, after a certain amount of commercial refinement, Superglue (or “Alcohol-Catalyzed Cyanoacrylate Adhesive Composition”, to give it its full name) was born.

It was later used for treating injured soldiers in Vietnam – the adhesive could be sprayed on open wounds, stemming bleeding and allowing easier transportation of soldiers; adding a delicious layer of irony to the story in that a discovery made during an effort to improve the killing potential of guns ended up saving countless lives.

Sweet.10. LSD
The unintentional discovery of d-lysergic acid diethylamide tartrate-LSD-25 led to a cultural revolution – nobody today can deny that the hallucinogen uncovered by Swiss scientist Albert Hoffman in 1938 helped shape the hippy movement of the 1960s and sparked worldwide interest, having a massive impact on neuroscience research and treatment.

The actual discovery of LSD as a hallucinogen occurred when Dr Hoffman was involved in pharmaceutical research in Basel, Switzerland, hoping to produce drugs that would help ease the pain of childbirth. Having synthesized what would later become known as LSD; Hoffman catalogued the untested substance and placed it in storage, after finding nothing particularly interesting about it during the initial analysis. It wasn’t until a Friday afternoon in April 1943 when Hoffman discovered the true properties of the compound, inadvertently absorbing a healthy dose of it when handling the chemical at work without wearing gloves. On his bicycle ride back home he observed “an uninterrupted stream of fantastic pictures, extraordinary shapes with intense, kaleidoscopic play of colors”.

Criminalized throughout the USA in 1966 (and most others following suit soon after), further research into LSD was (and still is) constantly hampered by its illegal status. Early researcher Dr Richard Alpert claimed to have administered LSD to 200 test subjects by 1961, and reported that 85% of his test subjects said that the experience was the “most educational” of their lives.

Here are a few other accidental innovations that deserve at least a mention: saccharin (artificial sweetener), Scotchguard (aka Sellotape), Teflon, the band-aid, the frisbee, the sandwich, the popsicle, Silly Putty, x-rays, vulcanized rubber, velcro, and safety glass.

[via pocketgadget]
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Signal bars - What are they for?




There's an icon in the corner of every mobile phone's screen that we are all familiar with. But do we really know what those signal bars mean?

That question was raised for me by this blogger, who also links to an interesting discussion thread on the matter here. Various people pitch in, some with knowledge of working in the handset or network operator industry. They give a suite of reasons that the bars are not much use, including:
  • There are no industry standards for what 'one bar', 'two bars', etc means
  • Some phones estimate signal quality when idle, only measuring it properly when you try to call, which is misleading
  • Under the CDMA protocol used in North America, bar represent signal strength, but not a variable dubbed EC/I0, which is the portion of that signal that is usable
Interesting points. But if we want to improve things, the technical details are not really important. We need to decide what we want to know about our signal first.

At the moment, phone manufacturers give us little idea of what to expect. But people still read a lot of information into signal bars. It's not unusual to hear people boast "I've got five bars" when a friend struggles to connect. I often hear people comparing signal strength on parts of London's metro network where the tunnels are not deep enough to completely block signals.

But really, most of us have no idea what those bars mean. I think we need to rethink them, with an indicator directly related to what you can do with the signal you have.

How about using these four categories:
  • No signal
  • Text messaging only
  • Poor call quality likely
  • No problems
I'll admit that's not perfect. For example, an indication of how much bandwidth you have for data transfer could be useful. Can anyone else think of a better way of representing signal strength and what you can do with it?

[via newscientist]
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When Plants & Rocks Go Bad...


I think there may be a bit of jealousy on the plants part here. (pun intended)




















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New Solar Collector So Efficient It Works At Night




The most expensive, carefully designed, and complicated solar panels in the world operate at about 40% efficiency. That means that, for every bit of sunlight that hits the panel, only 40% of it is turned into electricity.

Scientists think that this is just about as good as silicon panels can do and are now looking at ways to make it cheaper, instead of making them more efficient. But suddenly, from nowhere, comes Steven Novack of the Idaho National Laboratories with an inexpensive, foldable solar panel that may turn out to be up to 80% efficient.

The trick is nanotechnology. The surface of the material is printed with miniscule nano-antennae that capture infra-red radiation, the kind that the sun puts out in abundance, and is even available at night. Television antennas absorbe large wavelength energy, so in order to absorb ultra-small wavelength energy (photons) they had to create ultra-small antennas.

The material is fairly simple to create, and scientists are confidient that it would scale easily out of the laboratory. But there is a bit of a hitch: There's currently no way to capture the energy being created.

So while there are electrons pouring out of the nano-antennas when exposed to the sun, there is no way to capture those electrons. But don't worry, those geniuses in Idaho are working on that already. By putting a tiny capacitor, or AC/DC converter in the center of every tiny tiny antenna, they think they could make this new kind of solar panel export all that energy it's created without raising the price, or lowering the efficiency too much.

[via groovygreen]
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12 Things I Learned By 42 That I Wish I Knew At 22



1. Stay in school. Don’t quit. Sure you’re bored now, but wait until you’re in a dead end job that you can’t stand but you’re afraid to lose. Getting finished with your degree will open up many more opportunities than you realize. I always wanted to go to law school, but without that sheepskin, I didn’t have a chance of even being considered. The lesson learned here is finish what you start by throwing yourself into it fully. Treat your college experience as if it were a job. Arrive on time, do your homework, study, and treat your learning process as if you were at a real job.

2. Money doesn’t spoil, it keeps. Start investing early. How much stuff do you have to show for the money you made in high school and college? If I had invested half of what I made during those years in a plain old, broad based mutual fund, I would have well over $192,000 with no other investments made since then. I’m still kicking myself. Invest early.

3. Don’t buy the first house you look at. Buy the cheapest house in the nicest neighborhood. No, I didn’t actually do this, but it was close. We were so excited to be approved for a loan, having just come out of Consumer Credit Counseling Services that we jumped at the first house we found that met our minimum requirements. I still love that house today, but I wish we had gotten a better inspection, had looked into building, or had found a way to buy a house that was closer to work and school. The lesson learned, don’t be desperate with a large purchase.

4. Establish the habit of living within a budget. Could anything be more important to insure you are living below your means? I tried on several occasions but I was never as faithful to this ideal as I should have been. Today, I make a salary high enough that a budget is a “yeah, we really ought to do that” kind of thing. My goal is to get that done. If I could do it over I would get myself in this habit at the earliest possible age. The lesson learned: budgeting is a freeing process, not a limiting one. If I had lived on a budget, I could have circumvented many painful events.

5. Learn how to negotiate a better deal on everything. Having read several books on negotiation just a little too late, I’ve recognized how I was duped by many people, mostly used car sales people. I wrote a review on Secrets of Power Negotiating that you can read here. Learning these skills would have saved me thousands. The lesson learned: prepare by educating yourself and always be willing to walk away.

6. Keep your medical insurance in force at all times. Several years ago, I quit one job and took another that didn’t offer medical insurance until you had been there for 90 days. You guessed it, my wife had to have emergency surgery at 89 days. True story. 89 days. Do you think the insurance company cared? I’ll let you guess. Thankfully, we were at St. Vincent’s Hospital and they had mercy on us. The business manager told me (after looking over my financial situation) that someone paid our bill. I still get choked up thinking about it all these years later. It took us years to pay off the doctor and anesthesia bills, though. If I had just kept my coverage in effect for a little while longer. The obvious lesson: keep that insurance in effect. It is cheaper than the medical bills.

7. It’s quality of time at work, but quantity of time at home that matters. Your boss really doesn’t care whether you have a family or not. Trust me. Unless you work for family members who DO understand that you need to pick the kids up early, or that you DO need to spend some time with your spouse, you are just a replaceable cog in the machine. When people are trying to grow a business, your need for personal time is secondary, so is the quality of your marital and family relationships. Just remember that when you’re old, sitting in a chair at the nursing home with a blanket on your lap and eating mush, you won’t regret that you didn’t get to spend more time at the office. The lesson learned: family will be there after the job is long gone. Value and treasure them.

8. Don’t listen to those who think there is a shortcut to wealth. NEW FLASH: there is no shortcut. Might as well get that out of your 22 year old head right now. Wealth is created when you provide something interesting, unique and valuable to people who demand it. Until then, you will be trading hours for dollars and you’ll always think you’re underpaid. “Find a need and fill it” is the old mantra and it is still quoted because it’s true. In today’s world it should read “Create a need that only you can fill.” Then you’ll be on your way to wealth. The lesson learned: figure out where there are unmet needs and figure out a way to fill those needs.

8a. Stay far, far away from any Multi Level Marketing “business” that requires you to sponsor new distributors. They are all scams. You are not “CEO of your own distribution network”–you are a commission-based salesperson relying on the liquidation of your social capital (i.e. alienating your friends and family) to make any money at all…and 99.5% of people in MLM’s lose money, as has been shown again and again in numerous studies. The only profit you can ever make is by turning what would be called “customers” into “distributors” and then taking the money from the 99.995% that lose money in the organization and giving it to the 0.005% at the top (the people who started the whole “business” in the first place). Stay away!

9. Make sure your spouse’s values line up with your own. This one step can single handedly determine your level of happiness more than just about any other. Scary isn’t it? If everything seems so right, yet he or she thinks credit should be used at will (and you don’t) or thinks that home schooled kids are strange (and you want your children to be home schooled), you are setting yourself up for heartbreak. Work these things out before you say “I do.” They say love is grand . . . and divorce is 50 grand. The lesson learned: talk to your spouse or potential spouse about what is important to you and the values you think should be taught to your children, even if you don’t plan on having children.

10. Learn how to network. Learn to stay in touch with old friends from high school and college. Learn the skill of asking for help without seeming to be asking for help. Watch how others network. Remember it’s not what you know, it’s not even who you know, it’s how you USE what you know and who you know. One step further, it’s not who you know, it’s who knows YOU. Get in the practice of networking without expecting anything in return. Make sure you don’t come across as a brown nosing leech who is always trying to get an angle, but stay in touch with people. You never know who you may be able to help. The lesson learned: stay in touch and make sure you come across as helpful rather than helpless.

11. Never accept a job just because the pay is higher. Life is more than money. There’s a reason they’re offering you more. Yes it may be that you’re the most qualified. It may be that you have the most experience and the most education. It may be that no one can stand to work for that particular department head and a high salary is the only way to fill the position. Always ask where the person who last held the position is working now. Ask to speak with them, but always do it away from the office. People will give you more information outside of the office than inside. Inside the office, they’re committing treason, outside, hey - they’re just chatting with a friend. The lesson learned: Get the full scoop before jumping out of a frying pan into the fire.

12. Trust, but verify. You can’t believe everything you hear, read, or were taught as a kid. You should always check references, ask probing questions, search out answers, and find ways to learn more about what you’re being told. This is a catch all but it is important. The world is full of schemers who are just waiting to take you for a ride. Don’t become cynical, but verify everything you can. The lesson learned: make sure you know who it is you’re dealing with and what their motives may be.

Learn who you are and what motivates you. Learn what motivates your spouse and children. Learn what motivates your friends. Learn what motivates your co-workers, your boss, and your boss’s boss. Never stop learning, never stop growing. By the time you reach 42, kid, you’ll be a millionaire! ;)

What would you tell yourself if you could go back twenty years?

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