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| ==== Communication ==== | | ==== Communication ==== |
− | *[[Data storage device]], any physical material that records or holds recorded information | + | *Data storage device, any physical material that records or holds recorded information |
− | ** [[Art medium]], materials and techniques used by artists to produce art works | + | ** Art '''medium''', materials and techniques used by artists to produce art works |
− | *[[Transmission medium]], in physics and telecommunications, any material substance which can propagate waves or energy | + | *Transmission '''medium''', in physics and telecommunications, any material substance which can propagate waves or energy |
− | **[[Optical medium]], material through which [[Electromagnetic radiation|electromagnetic waves]] propagate | + | **Optical '''medium''', material through which [[Electromagnetic radiation|electromagnetic waves]] propagate |
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| ====Economics==== | | ====Economics==== |