Chemical InstrumentationOxford University Press, 1994 - 92 pagine Instrumentation, often of a highly sophisticated kind, lies behind many of the most interesting aspects of contemporary chemistry. Yet undergraduates reading chemistry often have only the most rudimentary understanding of the way in which electronics and allied disciplines have provided powerful tools that enable creative experimentation to be performed. This book aims to provide an understanding of some of the basic techniques that are harnessed for the benefit of chemists. |
Sommario
Fundamental ideas | 1 |
Simple measuring instruments | 20 |
Input transducers | 34 |
Copyright | |
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a.c. signal a.c. voltage amplitude analogue anode applied voltage average balance bandwidth behaviour boxcar integrator bridge calibration capacitance capacitor cathode charge carriers coil components connected converted current flowing cycle detected detector determined devices differential amplifier diode display dynodes electrical signal electrons elements energy example experiment feedback Figure Fourier transform function gain gate impedance increases inductance inductors input voltage integrated circuits inverting input ions laser light low-pass filter magnetic field measurements meter methods microprocessors modulation multichannel multiplex negative noise non-inverting obtained operational amplifiers operations oscillator oscilloscope output voltage phase photodetector photodiode plates positive potential potential divider potentiometer produced pulse R₂ reactance resistance resistor resonance S/N ratio Section semiconductor sensitivity shot noise shown in Fig shows simple sine wave spectrometer spectrum suitable switch techniques temperature thermal thermopile transducer transient recorder transistor trigger V₁ V₂ waveform wavelength wire zero