ver, considering the extreme cone of rays which can fall upon thereceiver, it may be seen that the diameter of the source must beat least one-twelfth the distance from the source to a point 29 to 30cm back from the front opening of the pyrometer. 2. MIRROR AND SPIRAL SPRING PYROMETER (FERY SPIRAL…
Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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