The new encyclopædia Britannica: in 30 volumes |
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Page 526
... electrons in a solid as free electrons that possess a mass different from the free - electron mass . The effective mass approximation , whereby the effect of the periodic lattice is taken into account by introducing an effective mass ...
... electrons in a solid as free electrons that possess a mass different from the free - electron mass . The effective mass approximation , whereby the effect of the periodic lattice is taken into account by introducing an effective mass ...
Page 1034
... electrons of neutral atoms are shared between nearest neighbours in the crystal . This atomic arrangement allows each of the atoms to achieve a closed outer electron shell by sharing electrons with its neigh- bours . Covalent bonds ...
... electrons of neutral atoms are shared between nearest neighbours in the crystal . This atomic arrangement allows each of the atoms to achieve a closed outer electron shell by sharing electrons with its neigh- bours . Covalent bonds ...
Page 1040
... Electron emission . The free electrons in a metal have kinetic energy ranging from near zero to several electron volts . Nevertheless , their interaction with the ion cores is still sufficiently large so that they must have appreciably ...
... Electron emission . The free electrons in a metal have kinetic energy ranging from near zero to several electron volts . Nevertheless , their interaction with the ion cores is still sufficiently large so that they must have appreciably ...
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