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![Figure 8 ship4461.jpg Figure 8](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4461.jpg?itok=_6TuXpWI)
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Figure 8. Integrating solarimeter - measures energy developed fromsolar radiation based on the absorption of heat by a black body. Theprinciple this instrument was designed on was first developed by the Italian priest, Father Angelo Bellani. He invented the actinometric methodwhich is based on physical and chemical techniques. (Image credit: Oceanographic Museum of Monaco | Y. Berard)