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Electromagnetic waves

Why don't we send data by light waves , instead of radio and microwaves ?;
Original post by Muhammad Ali 33
Why don't we send data by light waves , instead of radio and microwaves ?;

Light cannot penetrate walls… so will have limited range
Source: https://www.morson.com/everything-you-need-to-know-about-li-fi
(edited 9 months ago)
Thanks a bunch

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