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    LARGEST DIAMOND
    January 26, 1905 - Premier mine, South Africa

    The world's largest gem-quality diamond was discovered in the Premier mine in the Transvaal (a British crown colony that later became part of South Africa). It weighed 3,106 carats, or about 1-1/3 pounds, and was named the Cullinan Diamond in honor of Sir Thomas Cullinan, owner of the mining company. The Transvall Government purchased the diamond and presented it to the British monarch, King Edward VII, on his 66th birthday. When the rough diamond was cut, it produced nine large stones and nearly 100 smaller ones. All of these stones were flawless. Now part of the British crown jewels, the largest cut gem, named the Great Star of Africa, was set in the English sculptor; the second largest was added to the gems in the imperial state crown.

    HYDROPLANE
    January 26, 1911 - North Island, San Diego, California, U.S.A.

    Glenn Curtiss piloted the first hydroplane flight at North Island, San Diego, California, with a successful take-off from water and landing on water. Rose six feet and flew about two or three hundred yards. The airplane Flying Fish had pontoons in place of wheels. The rear pontoon was 6-ft wide and 5-ft long. The front one was narrower. He had made his first flight on his 30th birthday, 21 May 1908, in White Wing, a design of the Aerial Experiment Association, the group led by Alexander Graham Bell. Curtiss began building his own aircraft. He pioneered the design of the floatplane and the flying boat. Curtiss established an aviation school on North Island in San Diego Bay, Dec 1910. On 17 Feb 1911, He demonstrated the first hydroplane flight to a ship, the USS Pennsylvania.

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    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

RC Hobby :

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RC hobby, which is taking up RC toys as a hobby, can entertain and give you a fun-filled experience. These RC toys are taking the spotlight for a great hobby, not only for kids but also for adults. It's never too late to try one as more and more people are getting into this kind of hobby.

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RC hobby, which is taking up RC toys as a hobby, can entertain and give you a fun-filled experience. These RC toys are taking the spotlight for a great hobby, not only for kids but also for adults. It's never too late to try one as more and more people are getting into this kind of hobby. Amongst the various types of RC toys, RC Helicopter is the most popular nowadays.

With the ongoing of the technological enhancements, flying a RC helicopter is fun and very affordable. With only about $60, you can have your own dream to fly a RC toy. Another benefit of an RC hobby is that these toys do not release harmful fumes than the other helicopter models and types release. Thus, the pilot and the onlookers will always be safe from harmful chemicals. It's always said that it's easier to fly than any other models. Most RC helicopters are ready to use and fly after the purchase; you don't need to assemble anything anymore.

The usual RC helicopter needs at least four controls. One is called the Roll or the Cyclic Pitch, the Elevator control, the Rudder, and the Collective Pitch or Throttle. You can then control the height of the flight, the steadiness of the course, and some experts like to do an acrobatic control with their RC hobby crafts. RC toys are best played in an open field where you can observe their every move and route. However, RC Helicopters are better than RC airplanes because helicopters don't need a runway to fly, you can definitely fly it anywhere, even in your backyard or inside the house.

The care and maintenance of this kind of toy is not as complicated as you think. It is a technical hobby so you also have to learn some technical tips to better care for your RC toy. The battery life is an important thing to know how to stretch the limit. Before charging it again after it drained, let it cool down first for about 15 minutes before hooking it up to charge. In this way, you will help the battery have a break and not overuse it. Before using the toy, make sure that the screws and bolts are secured in the proper places to avoid any unexpected accidents with your RC hobby craft. If something is not right, like the presence of a weird sound that you have not heard before, you have to stop using it and have it checked first with an expert to avoid sudden breakdown of your RC toy. And when keeping the item, put it in a place where it is wide and has enough room for your helicopter to prevent scratching or unwanted pressing on the item.

There are many types of RC helicopters to choose from if you want to buy one. The Mini RC Helicopters are the smallest, inexpensive, and very durable. It's better to start with a smaller helicopter first as you begin to practice to control the RC toy. The Coaxial Helicopters are more complicated to control since it has 4 channels to control. This one is good for those who want to develop a hobby for flying helicopters. If you've already developed a flying skill, then the 3D Helicopter is the one for you, since it can perform a lot of new tricks and acrobatic moves.


Source : EzineArticles

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