Pyranometer containing solar cells measures combined intensity of direct light from Sun and diffuse light from sky. Instrument includes polyethylene dome that diffuses entering light so output of light detectors does not vary significantly with changing angle of Sun during day. Not to be calibrated for response of each detector to Sun angle, and sensor outputs not corrected separately before summed and integrated. Aids in deciding on proper time to harvest crops.
Inexpensive Meter for Total Solar Radiation
NASA Tech Briefs ; 11 , 1
1987-01-01
Miscellaneous
No indication
English
Inexpensive, portable, integrating solar energy meter
NTRS | 1978
|Inexpensive high-temperature solar collector
NTRS | 1977
|Inexpensive Antireflection Coating for Solar Cells
NTRS | 1982
|Inexpensive silicon sheets for solar cells
NTRS | 1977
|