•ft, o s & ii2 Bulletin of the Bureau of Standards [Vol. 12 the pinion screw and thus moving the large concave mirror in thedirection OD, the points P and P of the reflected images movealong the lines PO and P0, coinciding at 0 when the correctfocus is obtained. The two arrows are then…
Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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