Free-space optical communication

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking over long distances. "Free space" means air, outer space, vacuum, or something similar.

Excerpt from the Wikipedia article “Free-space optical communication”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Sanngetall, CC BY-SA 3.0, via Wikimedia Commons.