The New Encyclopædia BritannicaEncyclopædia Britannica, 1992 |
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Page 18
... nanometres ) is about six times larger than that for red light ( 2 = 640 nanometres ) and this accounts for the blue colour . Lab- oratory measurements of the amount of scattered light agree with that calculated from equation ( 17 ) ...
... nanometres ) is about six times larger than that for red light ( 2 = 640 nanometres ) and this accounts for the blue colour . Lab- oratory measurements of the amount of scattered light agree with that calculated from equation ( 17 ) ...
Page 25
... nanometres and 400 nanometres , corresponding to the re- gion between deep red and deep violet ) requires excitation energies the minimum of which is given by Einstein's law stating that the energy ( E ) is equal to Planck's constant ...
... nanometres and 400 nanometres , corresponding to the re- gion between deep red and deep violet ) requires excitation energies the minimum of which is given by Einstein's law stating that the energy ( E ) is equal to Planck's constant ...
Page 28
... nanometres ) of the zinc sulfide phosphor ( ZnS / Cu ) is explained by the recombination of an electron from the conduction band and a copper ion in an activator centre ( 79 ) ; the blue emission ( 463 nanometres ) is due to ...
... nanometres ) of the zinc sulfide phosphor ( ZnS / Cu ) is explained by the recombination of an electron from the conduction band and a copper ion in an activator centre ( 79 ) ; the blue emission ( 463 nanometres ) is due to ...
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