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Showing posts with the label LED

Wi-Fi replaced by Li-Fi in China?

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Chinese scientists have successfully developed a new cheaper way of getting connected to internet by using signals sent through light bulbs instead of radio frequencies as in 'Wi-Fi', a move expected to radically change process of online connectivity.  Four computers can be connected to internet through one- watt LED bulb using light as a carrier instead of traditional radio frequencies, as in Wi-Fi, said Chi Nan, an information technology professor with Shanghai's Fudan University. Under the new discovery dubbed as 'Li-Fi', a light bulb with embedded microchips can produce data rates as fast as 150 megabits per second, which is speedier than the average broadband connection in China, said Chi, who leads a Li-Fi research team including scientists from the Shanghai Institute of Technical Physics of the Chinese Academy of Sciences.  Four computers can be connected to internet through one- watt LED bulb using light as a carrier instead of traditional radio frequenci...

Gravity Bulb.....!!!!!

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Deciwatt, which is a part of the design company, Therefore in London, UK has developed a technology that will revolutionise the way light bulbs work. Called GravityLight, the project which was co-invented by Martin Riddiford and Jim Reeves, manufactures light bulbs that are powered by gravity. Wondering how it works? Well, as a part of this technique, a sack of sand is used to gradually pull a piece of rope through a dynamo mechanism that generated electricity, which ultimately powers the LEDs (Light Emitting Diodes). This is not it! The most startling fact of this technique is that a total of three-second pull on this rope can keep the LED bulb running for up to 30 minutes. Such applications are viable for countries that do not have a stable and reliable electricity access. The team of the project shares that this project will distribute light bulbs for free to billions of poor people who currently rely on biomass fuels like kerosene, which can be really hazardous to health....