Instrument for measuring light falling on given spot uses simple silicon photovoltaic cell as sensing element. It measures all light at location: direct, scattered, reflected, or reradiated. Silicon cell is coated with thick antireflecting layer of silicon monoxide and is enclosed in glass dome. Large heat sink reduces temperature fluctuations. Instrument is accurate within few percentage points over angle of Sun's arc across sky.
Solar meter with silicon photocell
NASA Tech Briefs ; 2 , 2
1977-11-01
Miscellaneous
No indication
English
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