Encyclopedia of Physical Science and Technology, Volume 2Academic Press, 1992 - Physical sciences |
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Page 182
... photon on them , in contrast to photo- graphic film or emulsions , which require ~ 100 photons to produce a detectable event . One can- not increase the efficiency of detectors beyond 100 % , however , and so the quest for increased ...
... photon on them , in contrast to photo- graphic film or emulsions , which require ~ 100 photons to produce a detectable event . One can- not increase the efficiency of detectors beyond 100 % , however , and so the quest for increased ...
Page 207
... photons around , simply because the matter in the universe is hot . Once the universe is a million years old , it becomes un - ionized ; these photons no longer interact with the matter in the universe , and they are progressively ...
... photons around , simply because the matter in the universe is hot . Once the universe is a million years old , it becomes un - ionized ; these photons no longer interact with the matter in the universe , and they are progressively ...
Page 561
... photons ) have energy and are affected by grav- ity . Photons follow " curved " paths near a gravi- tating object similar to those of a comet that passes the sun . This effect , called light bending , was one of the first predictions of ...
... photons ) have energy and are affected by grav- ity . Photons follow " curved " paths near a gravi- tating object similar to those of a comet that passes the sun . This effect , called light bending , was one of the first predictions of ...
Contents
Guide to Using the Encyclopedia ix Atomic Physics | 339 |
Approximations and Expansions 1 Atomic Spectrometry | 357 |
Archaeological Geology 31 Atomic Spectroscopy | 381 |
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