they provide adequate amplification range for calculating devices, being more accurate and sensitive than the remaining portions of the circuit. Electrometer tubes can be described as more accurate and more precise versions of receiving tubes. ... the difference in rotation between two shafts may be measured by some photometric method which imposes almost no load on the input shaft, and the ... The manual describes the various types of tubes and their uses in radio receiving sets.
|Title||:||The theory of mathematical machines|
|Author||:||Francis Joseph Murray|