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Sunday, April 12, 2009

10 things that were discovered accidently

Contributed by: Murlidhar Rao (jayamurli1954 @ gmail.com)

1. Viagra

Men being treated for erectile dysfunction should salute the working stiffs of Merthyr Tydfil, the Welsh hamlet where, in 1992 trials, the gravity-defying side effects of a new angina drug first popped up. Previously, the blue-collar town was known for producing a different kind of iron.

2. LSD

Swiss chemist Albert Hofmann took the world's first acid hit in 1943, when he touched a smidge of lysergic acid diethylamide, a chemical he had researched for inducing childbirth. He later tried a bigger dose and made another discovery: the bad trip.

3. X-rays

Several 19th-century scientists toyed with the penetrating rays emitted when electrons strike a metal target. But the x-ray wasn't discovered until 1895, when German egghead Wilhelm Rntgen tried sticking various objects in front of the radiation - and saw the bones of his hand projected on a wall.

4. Penicillin

Scottish scientist Alexander Fleming was researching the flu in 1928 when he noticed that a blue-green mold had infected one of his petri dishes - and killed the staphylococcus bacteria growing in it. All hail sloppy lab work!

5. Artificial sweeteners

Speaking of botched lab jobs, three leading pseudo-sugars reached human lips only because scientists forgot to wash their hands. Cyclamate (1937) and aspartame (1965) are byproducts of medical research, and saccharin (1879) appeared during a project on coal tar derivatives. Yummy.

6. Microwave ovens

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Microwave emitters (or magnetrons) powered Allied radar in WWII. The leap from detecting Nazis to nuking nachos came in 1946, after a magnetron melted a candy bar in Raytheon engineer Percy Spencer's pocket.

7. Brandy

Medieval wine merchants used to boil the H20 out of wine so their delicate cargo would keep better and take up less space at sea. Before long, some intrepid soul - our money's on a sailor - decided to bypass the reconstitution stage, and brandy was born. Pass the Courvoisier!

8. Vulcanized rubber

Rubber rots badly and smells worse, unless it's vulcanized. Ancient Mesoamericans had their own version of the process, but Charles Goodyear rediscovered it in 1839 when he unintentionally (well, at least according to most accounts) dropped a rubber-sulfur compound onto a hot stove.

9. Silly Putty

In the early 1940s, General Electric scientist James Wright was working on artificial rubber for the war effort when he mixed boric acid and silicon oil. V-J Day didn't come any sooner, but comic strip image-stretching practically became a national pastime.

10. Potato chips

Chef George Crum concocted the perfect sandwich complement in 1853 when - to spite a customer who complained that his fries were cut too thick - he sliced a potato paper-thin and fried it to a crisp. Needless to say, the diner couldn't eat just one.

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What Makes a Smartphone Smart?

Contributed by: Ahmed Imam (idealimam @ yahoo.com)

You probably hear the term "smartphone" tossed around a lot. But if you've ever wondered exactly what a smartphone is, well, you're not alone. How is a smartphone different than a cell phone, and what makes it so smart?

In a nutshell, a smartphone is a device that lets you make telephone calls, but also adds in features that you might find on a personal digital assistant or a computer--such as the ability to send and receive e-mail and edit Office documents, for example.

But, to really understand what a smartphone is (and is not), we should start with a history lesson. In the beginning, there were cell phones and personal digital assistants (or PDAs). Cell phones were used for making calls--and not much else--while PDAs, like the Palm Pilot, were used as personal, portable organizers. A PDA could store your contact info and a to-do list, and could sync with your computer.

Eventually, PDAs gained wireless connectivity and were able to send and receive e-mail. Cell phones, meanwhile, gained messaging capabilities, too. PDAs then added cellular phone features, while cell phones added more PDA-like (and even computer-like) features. The result was the smartphone.

Key Smartphone Features

While there is no standard definition of the term "smartphone" across the industry, we thought it would be helpful to point out what we here at About.com define as a smartphone, and what we consider a cell phone. Here are the features we look at:

Operating System: In general, a smartphone will be based on an operating system that allows it to run productivity applications. BlackBerry smartphones run the BlackBerry OS, while other devices run the Palm OS or Windows Mobile. There are smartphone OSes that are pared-down versions of desktop Linux, too.Earn money with Scour!

Software: While almost all cell phones include some sort of software (even the most basic models these days include an address book or some sort of contact manager, for example), a smartphone will have the ability to do more. It may allow you to create and edit Microsoft Office documents--or at least view the files. It may allow you to download applications, such as personal and business finance managers. Or it may allow you to edit photos, get ]driving directions via GPS, and create a playlist of digital tunes.

Web Access: More smartphones can access the Web at higher speeds, thanks to the growth of 3G data networks and the addition of Wi-Fi support to many handsets. Still, while not all smartphones offer high-speed Web access, they all offer some sort of access. You can use your smartphone to browse your favorite sites.

QWERTY Keyboard: By our definition, a smartphone includes a QWERTY keyboard. This means that the keys are laid out in the same manner they would be on your computer keyboard--not in alphabetical order on top of a numeric keypad, where you have to tap the number 1 to enter an A, B, or C. The keyboard can be hardware (physical keys that you type on) or software (on a touch screen, like you'll find on the iPhone).

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Messaging: All cell phones can send and receive text messages, but what sets a smartphone apart is its handling of e-mail. A smartphone can sync with your personal--and, sometimes, your professional--e-mail account. Some smartphones can support multiple e-mail accounts. Others include access to the popular instant messaging services, like AOL's AIM and Yahoo! Messenger.

These are just some of the features that make a smartphone smart. But right now, they're the features we use when deciding whether a phone is a smartphone or a cell phone. The technology surrounding smartphones and cell phones is constantly changing, though. What constitutes a smartphone today may change by next week, next month, or next year. Stay tuned!

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