measure of sky radiation![click to hear](/images/speaker.jpg)
Sky radiation: indirect solar radiation that passes through cloud and diffuses on the Earth’s surface.
pyranometer ![click to hear](/images/speaker.jpg)
Instrument designed to measure overall or indirect solar radiation.
data logger ![click to hear](/images/speaker.jpg)
sensor ![click to hear](/images/speaker.jpg)
It converts indirect solar energy into electricity: the higher the levels of sky radiation, the more electrical current is generated.
shadow band ![click to hear](/images/speaker.jpg)
It shields the pyranometer from direct sunlight, allowing only indirect sunlight to be measured.