Chemical Instrumentation: A Systematic Approach to Instrumental AnalysisAddison-Wesley Publishing Company, 1960 - 653 pagine |
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Risultati 1-3 di 82
Pagina 288
... temperatures a few electrons will acquire sufficient thermal energy to overcome the work function . As the temperature is raised , more will be emitted . The relation describing the current density of emission is the Richardson equation ...
... temperatures a few electrons will acquire sufficient thermal energy to overcome the work function . As the temperature is raised , more will be emitted . The relation describing the current density of emission is the Richardson equation ...
Pagina 434
... temperature , t1 is the temperature of the wire , t2 is the temperature of the wall , km is the thermal conductivity of the gas at its mean tempera- ture , and a is the cell constant . The temperature coefficient of k can also be ...
... temperature , t1 is the temperature of the wire , t2 is the temperature of the wall , km is the thermal conductivity of the gas at its mean tempera- ture , and a is the cell constant . The temperature coefficient of k can also be ...
Pagina 435
... temperature over small temperature ranges . or AR = a R. At Ak AR = - a Ro - km ( tı — t2 ) , ( 14-9 ) where a is the temperature coefficient of the resistance of the element and R. is its resistance at temperature t1 . To improve the ...
... temperature over small temperature ranges . or AR = a R. At Ak AR = - a Ro - km ( tı — t2 ) , ( 14-9 ) where a is the temperature coefficient of the resistance of the element and R. is its resistance at temperature t1 . To improve the ...
Sommario
THE SCIENCE OF INSTRUMENTATION | 1 |
ERRORS OF MEASUREMENT | 14 |
CHAPTER 3 | 37 |
Copyright | |
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Chemical Instrumentation: A Systematic Approach to Instrumental Analysis Howard A. Strobel Visualizzazione estratti - 1960 |
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absorbance absorption acid activity addition allow amplifier analysis angle applied atoms band beam capacitor cathode cell charge circuit complex components concentration conductance constant curve dependence desired detector determined device direction discussed dispersion drop effect electrical electrode electrolysis energy error example field filter frequency give given glass greater grid incident increase indicator intensity interest ions known light limited lines means measurement mercury metal method mixture molecules negative Note observed obtained occurs operation optical output plate polarized positive possible potential precision present prism procedure produced radiation range reaction reduced reference reflection refractive region relative representative resistance response result sample scattering sensitivity shown signal slit solution species standard substance surface Table temperature tion titration tube usually varies voltage wave wavelength