Ever imagined the technology behind WiFi? Well let me give an introduction. WiFi technology uses radio waves. Radio waves travel in all directions and can penetrate walls. This is the prime reason why someone can steal your bandwidth and can access your router for internet if manual security settings have not been done. Also as physical distance increases, strength of the signal gets weak. I experience the same problem as I have a wireless router in my dad’s room and I get a puny 1-point signal in my room one floor above. One solution to this problem is to have multiple access points or to have a repeater, but these options are not viable in general and are costly.
A German Physicist, Harald Haas, has brought in a new technology - transmission of data through light waves - he calls it “data through illumination”. Visible light is used to transmit data through a LED light bulb, and he claims that the data transfer can be upto 10 megabits per second. Thats huge !!!
Also, the visible light spectrum range in 10,000 times larger than the radio waves, and thus interference among the signals is reduced to ta great extent. Also, the source of information, or “access points” are everyday light bulbs, and we already have 40 billion of them on our planet, already set up. “The infrastructure is already in place” exclaims Harald Haas.
Accessibility is greatly enhanced as light bulbs are everywhere. You can even access internet in an airplane as there would be no radio waves interfering with the pilot communication. And for people who do not like their WiFi to be used by hackers, it can only be used when you can see it. Now isn’t that a revolution?
“Do we have to keep light on all the time, even during the day?” is the question. “Yes” said Harald Haas, but he says the light can altered to such an intensity that it won’t be visible to the human eye and yet it would be enough to provide high speeds.
Personally, I am impressed by the technology. Still long time to put into effect, I would like to give a try to this simple yet effective technology of “web through light”. The ancient scriptures are so true: God said “Let there be light, and there was the world”
A German Physicist, Harald Haas, has brought in a new technology - transmission of data through light waves - he calls it “data through illumination”. Visible light is used to transmit data through a LED light bulb, and he claims that the data transfer can be upto 10 megabits per second. Thats huge !!!
Also, the visible light spectrum range in 10,000 times larger than the radio waves, and thus interference among the signals is reduced to ta great extent. Also, the source of information, or “access points” are everyday light bulbs, and we already have 40 billion of them on our planet, already set up. “The infrastructure is already in place” exclaims Harald Haas.
Accessibility is greatly enhanced as light bulbs are everywhere. You can even access internet in an airplane as there would be no radio waves interfering with the pilot communication. And for people who do not like their WiFi to be used by hackers, it can only be used when you can see it. Now isn’t that a revolution?
“Do we have to keep light on all the time, even during the day?” is the question. “Yes” said Harald Haas, but he says the light can altered to such an intensity that it won’t be visible to the human eye and yet it would be enough to provide high speeds.
Personally, I am impressed by the technology. Still long time to put into effect, I would like to give a try to this simple yet effective technology of “web through light”. The ancient scriptures are so true: God said “Let there be light, and there was the world”
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