Get your blinking internet working.
The amount of freedom we have with our laptop computers these days compared to a decade ago is remarkable. Thanks to Wi-Fi and even more so now with 3G networks, we can access the internet from almost anywhere. But what if all those electromagnetic waves are undesirable to you? Then perhaps blinking lights are more to your liking.
Chinese scientists have demonstrated a wireless networking method which uses blue LEDs that transmit data by modulating flicker rate. The LED lights can double as lighting as the blinking is imperceptible by the human eye.
The speed so far achieved through blinking lights is 2Mbps, which is quite sluggish by today's other wireless standards. Also, instead of worrying about radio signal interference, now the concern will be the blocking of light transmission.
Still, it's an interesting concept. Read more from the Beijing Times.
(Via Engadget)
LED's have amongst the longest lifespans of any bulb on this planet.
Uh, aren't "blinking lights" still emitting electromagnetic waves? =p
The picture *IS* of an LED. Try again, Captain Failboat.
Seriously..... Although it sounds cool, I think it's not so practical as LED's have generally low lifespans especially when they're almost always blinking.
LED's have amongst the longest lifespans of any bulb on this planet.
Uh, aren't "blinking lights" still emitting electromagnetic waves? =p
generally low life spans? are you talking about LED's that last 25,000 hours (and still shine 70% of what they were at when new after the 25,000 hours) ,or halogen and incandescent bulbs which typically burn out at 1,250 and 2,500 hours, respectively?
As far as i knew, LED's are the most efficient man-made visible light source we have.
yes but at a much longer wave length, thus being a lot less "harmful" if you can call wireless harmful.
Dead end!
and what exactly is light? if not an electromagnetic wave...??
Not every pic you see on here is going to be 100% accurect to the story, sometime there not really related at all....
http://www.tomshardware.com/news/PlayStation-Linux-PS3-Xbox-Xbox-360,10311.html
Having hospital equipment on heavily used public frequencies seems to be a problem that they should be focusing on fixing, not the consumers.
Morse code with flashlights at night not good enough for you? Why not hget a truckload of little LED's?
Shorter. It's just that we live with daily bombardment from visible and infrared light. Anything other wavelength range and people start worrying - microwaves, radio waves, ultraviolet, gamma and x-rays.
Like glass? Technically radio waves have no trouble with walls. Cell phones and wireless routers use the microwave band, which almost everything absorbs or reflects.
Maybe you haven't been in a hospital recently. My last several trips I've asked about cell phones, and they've stated that as long as the patient isn't on a heart monitor, that cell phones and other wireless is just fine.
Visible light has a very short wavelength compared to radio frequency EMF.
The picture *IS* of an LED. Try again, Captain Failboat.