Electronics

Around the globe, hydropower plants generate nearly 24 percent of the world's electricity and supply over  a billion people with power. The world's hydropower plants generates a combined amount of  675,000 megawatts , the energy equivalent of 3.6 billion barrels of oil, according to the National Renewable Energy Laboratory. There are over 2,000 hydropower plants operating in the United States, making hydropower the country's biggest renewable energy source. The Enormous Power of Water Watching a river flow, it is amazing to know amount of force it drags along. Have you ever been water rafting, then you must have experienced a small bit of the water power. Rapids are created as a river,dragging along a huge quantity of water downhill,forcefully through a narrow passageway. As the river is forces it way through small opening, its flows rapidly. Floods are typical examples of the huge amount force a large volume of water can exert. Hydropower plants utilize w

The foremost modern air conditioning system was developed in 1902 by a young electrical engineer known as Willis Haviland Carrier . It was designed to solve a humidity problem at the Sackett-Wilhelms Lithographing and Publishing Company in Brooklyn, N.Y. Paper stock at the plant would at times absorb moisture from the warm summer air, making it cumbersome to apply the layered inking techniques of the time. Carrier conditioned the air inside the building by blowing it over chilled pipes. The air is cooled as it is passed over the cold pipes, and since cool air is not able to carry as much moisture as warm air, the process reduced the humidity in the plant and stabilized the moisture content of the paper. Reducing the humidity also had additional benefit of lowering the air temperature and a new technology was born. Carrier realized he had developed something with extra potential, and it wasn't long before air-conditioning systems started appearing in theaters and stores, mak

World War II ended in Europe,on May 8, 1945. The terrifying scene of the Blitz and some other enormous bombing activities,continues to terrify people in Germany, England and other places till the present day. A typical example goes like this: During the execution of a commercial construction project, workers discovered a bomb that refused to explode when it dropped from the chest of an enemy plane several decades earlier. Although the thing appears inactive and harmless,it is the other way round. Depending on the size of the bomb and scale of construction, government officials may need evacuate several buildings, or farther square miles, in case the unexploded ordnance explodes. In November 2011,in the city of Koblenz, Germany, 45,000 people were evacuated when a 4,000-pound (1,814-kilogram) British bomb was found in the Rhine River . Moving people out of harm's way is the start. Second, bomb squads evaluates the bomb and take decisions about what to do with it. At t

Facebook Messenger is among those famous apps that nearly everybody uses daily and really do not think about it. It’s because of this that Facebook and other similar partner apps are gradually making it more powerful, with a lot of cool and interesting things you can do directly from within Messenger. The following are some of the interesting features to play around with: For beginners, do you know that you can use it as a stand-alone web client by visiting messenger.com . 1.Voice and Video Calls You may have not used it before, but Facebook Messenger is not only for text messages. It also very easy to use for voice and video calls by using the necessary buttons at the top of your chat.You can also send a voice message as you wish.If the person you want to talk to is not available, just send them a voice message they can listen to later. 2.Share Location If you really want your friends to know  your precise location, start  a chat with them, click the three dots an