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    Re: Pyroheliometer
    From: Thomas Kleemann
    Date: 2009 Jun 26, 23:52 +0200

    I read an article about it some months ago. Apparently the ministery of
    agriculture in Canada used this devices a lot.
    
    Orb-type,see:
    http://data.piercecollege.edu/weather/duration_sunlight_recorder.html
    http://en.wikipedia.org/wiki/Campbell-Stokes_recorder
    
    Others:
    http://en.wikipedia.org/wiki/Category:Sunshine_recorders
    http://www.sciencepunk.com/v5/gallery/quinnell.jpg
    
    /Thomas.
    
    Smith_Peter{at}emc.com schrieb:
    >
    > Can anyone provide more details of this type of device or other
    > non-electronic sunlight recorders?
    >
    
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