Can li-fi be used for long distance transfer.

5 pts.
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Long distance information travel.
Can li-fi information travel to distance up to 100 miles??
ASKED: January 14, 2014  7:23 AM
UPDATED: January 14, 2014  7:52 AM

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  • TomLiotta
    Welcome to ITKE. There should be practically no theoretical distance limit, but there are limits of feasibility. Li-Fi (light-fidelity) can work off of reflective surfaces, but line-of-sight would be needed for anything much beyond the space of a room or two or controlled environments. And because it's in the visible light spectrum, the light would need to be dim enough not to bother anyone's vision. As non-coherent light, it would also necessarily spread naturally and refract/reflect due to atmospheric conditions, which would put lower limits on brightness. For now, anything beyond a few meters is unlikely. That can change as emitters and sensors improve. -- Tom
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