The Reader's Digest, Volumen118De Witt Wallace, Lila Acheson Wallace, DeWitt Wallace Reader's Digest Association, 1981 |
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Página 132
... light in use ment . Today tungsten is typically today . Similarly , the high - pressure used , but in either case the friction sodium lamp gives off light by using caused by the current of electrons electrical current to excite a gas ...
... light in use ment . Today tungsten is typically today . Similarly , the high - pressure used , but in either case the friction sodium lamp gives off light by using caused by the current of electrons electrical current to excite a gas ...
Página 133
... light also emits ultraviolet light . When unnatural light confuses Last year F. Alan Andersen , a bio- our body's clocks , setting some physicist at the Food and Drug rhythms out of harmony with others , Administration's ( FDA ) Bureau ...
... light also emits ultraviolet light . When unnatural light confuses Last year F. Alan Andersen , a bio- our body's clocks , setting some physicist at the Food and Drug rhythms out of harmony with others , Administration's ( FDA ) Bureau ...
Página 134
... Light is narrow - spectrum “ cool white ” Aupotentially too useful an agency of orescent bulbs in common use . Light human health not to be more effec- stress could be reduced by mixing tively examined and exploited . ” Aluorescent and ...
... Light is narrow - spectrum “ cool white ” Aupotentially too useful an agency of orescent bulbs in common use . Light human health not to be more effec- stress could be reduced by mixing tively examined and exploited . ” Aluorescent and ...
Contenido
MERICA | 12 |
Theyve Killed My Daughter Twice | 59 |
Lion in the RainRinsed Morning | 93 |
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