photodetectors and photoresistor

Discussion in 'Darkroom Developing and Printing' started by swapna, Oct 12, 2008.

  1. swapna

    swapna Guest

    Photosensors or photodetectors are sensors of light or other
    electromagnetic energy. There are several varieties:
    • Optical detectors, which are mostly quantum devices in which an
    individual photon produces a discrete effect.


    A photoresistor or Light Dependent Resistor or CdS Cell is a resistor
    whose resistance decreases with increasing incident light intensity.
    It can also be referred to as a photoconductor.




    http://electronicstopics.blogspot.com/2008/10/photodetector-photoresistor.html
     
    swapna, Oct 12, 2008
    #1
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  2. On 10/12/2008 8:46 AM Michael spake thus:????> On 2008-10-12 02:56:49 -0400, swapna <> said:??> ??>> Photosensors or photodetectors are sensors of light or other??>> electromagnetic energy. There are several varieties:??>> ¥?Optical detectors, which are mostly quantum devices in which an??>> individual photon produces a discrete effect.??>> ??>> A photoresistor or Light Dependent Resistor or CdS Cell is a resistor??>> whose resistance decreases with increasing incident light intensity.??>> It can also be referred to as a photoconductor.??>> ??>> http://electronicstopics.blogspot.com/2008/10/photodetector-photoresistor.h??>> tml??> ??> And this cross post from (where else) Google Groups is relevant how?????No crosspost seen here (r.p.darkroom); perhaps you meant to say ??"multiple post"? Not particularly useful (and apparently self-promoting) ??in any case.??????-- ?? Washing one's hands of the conflict between the powerful and the??powerless means to side
    with the powerful, not to be neutral.????- Paulo Freire??
     
    David Nebenzahl, Oct 13, 2008
    #2
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  3. swapna

    Peter Chant Guest

    Just set your filters to delete google groups. Unfortunately it does get
    rid of a few useful posters but much of the rubbish goes.

    Pete
     
    Peter Chant, Oct 26, 2008
    #3
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