The laser is the perfect light source--as long as it is provided with energy, it generates light of a specific, well-defined colour. However, it is also possible to create its opposite--an object that perfectly absorbs light of a particular colour and dissipates the energy almost completely.
The laser is the perfect light source--as long as it is provided with energy, it generates light of a specific, well-defined colour. However, it is also possible to create its opposite--an object that perfectly absorbs light of a particular colour and dissipates the energy almost completely.
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