Thursday, November 21, 2013

Internet Connections Through LED Light Bulbs(250 Times faster than Broadband)

I know am a bit late in posting about this Technology but This Light Fidelity(Li-Fi) amazed me too much that i can't control ma scribbling.



Oh Technology!Li-Fi, an alternative to WI-Fi that transmits data using the spectrum of visible light, has achieved a new breakthrough, with UK scientists reporting transmission speeds of 10Gbit/s – more than 250 times faster than ‘super-fast’ broadband.

The fastest speed previously reported was 3Gbit/s, achieved earlier this year by the Fraunhofer Heinrich Hertz Institute in Germany. Chinese researchers also claimed this month to have produced a 150Mbp/s connection, but some experts were doubtful without seeing further proof.
Chinese scientists have invented a method to transmit internet signals through lightbulbs — or LiFi — in a method that's being hailed as a way that will allow people to go online more easily and cheaply than through traditional WiFi signals.

According to a report from state news agency Xinhua late this past week, the technology will allow up to four computers sitting under just a single one-watt LED light-bulb to go online, using a principle that allows light to carry signals instead of traditional radio frequencies.

Harald Haas from the University of Edinburgh in the United Kingdom coined the phrase "LiFi" to refer to light communications to deliver high-speed connections similar to the more-familiar WiFi. The technology has been around for some time, but hasn't been commercially developed.

"There are around 14 billion light bulbs worldwide, they just need to be replaced with LED ones that transmit data," Hass told New Scientist in 2011. "We reckon VLC(Visible Light Communication) is a factor of ten cheaper than WiFi."

The technology could be used safely in aircraft, hospitals and other places where WiFi is not allowed, or even underwater.


Chi Nan, an information technology professor with the Fudan University in Shanghai, said the special LED lightbulbs, which will have embedded microchips, will be able to produce data as fast as 150 megabits per second, or faster than China's average broadband connections allow.

The current WiFi signal transmission equipment is expensive in China and not efficient, said Chi, leader of a LiFi research team that includes scientists from the Shanghai Institute of Technical Physics of the Chinese Academy of Sciences.

"As for cell phones, millions of base stations have been established around the world to strengthen the signal but most of the energy is consumed on their cooling systems," she explained. "The energy utilization rate is only 5 percent."

In addition, the number of light-bulbs that can be used is limitless.
"Wherever there is an LED light-bulb, there is an Internet signal," said Chi. "Turn off the light and there is no signal."

The technology will go on display at a China trade show next month, but the actual development is still in its experimental stage because of work still going on with key related pieces of the technology, including light communication controls and microchip design.

There are some drawbacks to LiFi, though.

PARENT'S WISH


To my dear child:

On the day when you see me old, weak and weary, have patience and try to understand me.
If I get dirty when eating, If I can not dress on my own, please bear with me and remember the times I spent feeding you and dressing you up.
If, when I speak to you, I repeat the same things over and over again, do not interrupt me. Listen to me. When you were small, I had to read to you the same story A thousand and one times until you went to sleep.
When I do not want to have a shower, neither shame nor scold me.
Remember when I had to chase you with your thousand excuses to get you to the shower?
When you see my ignorance of new technologies, help me navigate my way through those world wide webs. I taught you how to do so many things, to eat the right foods, to dress appropriately, to fight for your rights.
When at some moment I lose the memory or the thread of our conversation, let me have the necessary time to remember. And if I can not, do not become nervous, as the most important thing is not our conversation, but surely to be with you and to have you listening to me.
If ever I do not feel like eating, do not force me. I know well when I need to and when not to eat.
When my tired legs give way and do not allow me to walk without a cane, lend me your hand. The same way I did when you tried your first faltering steps.
And when someday I say to you, that I do not want to live any more, that I want to die, do not get angry. Some day you will understand. Try to understand that my age is not just lived but survived.
Some day you will realize that, despite my mistakes, I always wanted the best for you and I tried to prepare the way for you. You must not feel sad, angry nor ashamed for having me near you.
Instead, try to understand me and help me like I did when you were young.
Help me to walk. Help me to live the rest of my life with love and dignity. I will pay you with a smile and by the immense love I have always had for you in my heart.
I love you child.

Monday, November 4, 2013

Count Down Begins for India's Mars Orbiter Mission

US,Russia,China,Japan and now India is launching its inter-planetary satellite to Mars.European Space Agency (ESA) of European consortium, National Aeronautics and Space Administration (NASA) of the US and Roscosmos of Russia are the only three agencies which have so far sent their missions to the red planet and now Indian Space Research Organization of India is launching its first satellite to mars this mission is named as Mars Orbiter Mission(MOM).

India’s ambitious mission to Mars moved ahead smoothly on Sunday with the 56.5- hour countdown beginning at 6.08 a.m. at the Sriharikota spaceport.The 44.4 meter tall rocket has been mounted on the pedestal of the First Launch Pad at the spaceport, covered by a 76 meter tall Mobile Service Tower, designed to withstand a wind speed of 230 km per hour. If the countdown progresses without any “hold,” the four-stage Polar Satellite Launch Vehicle (PSLV-C25) will lift off from the first launch pad at 2.38 p.m. on Tuesday (November 5) and put the 1,350-kg Mars Orbiter in a long, elliptical earth-orbit.It is expected to reach the orbit of the red planet on September 24, 2014, after traversing 400 million km.The vehicle tracking stations at Port Blair, Bylalu near Bangalore, Brunei and sea-borne terminals on board Shipping Corporation of India's vessels SCI Nalanda and SCI Yamuna positioned at South Pacific Ocean have also been kept on alert, ISRO sources said.


ISRO has previously stated that it has ambitions to launch a manned mission by 2016, so this is just the beginning for its loftier spaceflight goals.It means now we can dream of having a cappuccino sitting  in the luxurious house of ours built on mars..Can't we?? ..  ;-)

A globetrotter

Chandigarh-Delhi-Bhopal-Delhi-Bangalore & Pune, trying to frame briskly beguiled sixteen accustomed months.Still not sure about ma cons...