The New Encyclopaedia Britannica: Macropaedia (19 v.)Encyclopaedia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 179
... luminescence and incandes- cence become indistinguishable . Luminescent pigments and dyes . Nonluminescent pig- ments and dyes exhibit colours because they absorb white light and reflect that part of the spectrum that is comple- mentary ...
... luminescence and incandes- cence become indistinguishable . Luminescent pigments and dyes . Nonluminescent pig- ments and dyes exhibit colours because they absorb white light and reflect that part of the spectrum that is comple- mentary ...
Page 183
... luminescence decay of a great number of luminescent materials ; e.g. , calcium tungstate . Increase of activation energy for nonradiative deactiva- tion of excited - centres luminescence decay can be achieved by changing the host ...
... luminescence decay of a great number of luminescent materials ; e.g. , calcium tungstate . Increase of activation energy for nonradiative deactiva- tion of excited - centres luminescence decay can be achieved by changing the host ...
Page 185
... luminescence ; luminance . The efficiency of luminescence emission must be regarded on an energy and a quantum basis . When every exciting photon yields an emitted photon of the same energy ( which is the case for resonance excitation ...
... luminescence ; luminance . The efficiency of luminescence emission must be regarded on an energy and a quantum basis . When every exciting photon yields an emitted photon of the same energy ( which is the case for resonance excitation ...
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