Chemical Instrumentation: A Systematic ApproachAddison-Wesley Publishing Company, 1973 - 903 pagine |
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Pagina 524
... protons in a nucleus , as shown in Table 19.2 . The simplest model that suggests the origin of nuclear magnetism was developed for the proton ; it treats the proton as spherical with its mass and charge spread uniformly over the surface ...
... protons in a nucleus , as shown in Table 19.2 . The simplest model that suggests the origin of nuclear magnetism was developed for the proton ; it treats the proton as spherical with its mass and charge spread uniformly over the surface ...
Pagina 572
... proton spectrum at 30 MHz is shown . The strong resonance at d = 4.0 is assigned to the c - methyl protons . Since the much weaker resonances at 0.0 , 3.0 , 6.0 , and 9.0 ppm disappear on simultaneous irradiation at the resonance ...
... proton spectrum at 30 MHz is shown . The strong resonance at d = 4.0 is assigned to the c - methyl protons . Since the much weaker resonances at 0.0 , 3.0 , 6.0 , and 9.0 ppm disappear on simultaneous irradiation at the resonance ...
Pagina 578
... protons are there ? = 3.57 . b ) Predict roughly the chemical shift and multiplicity of each proton resonance . c ) Which multiplets should overlap ? One overlapping resonance is centered at d the other at 8 = 3.70 . Since JAB = 7 Hz ...
... protons are there ? = 3.57 . b ) Predict roughly the chemical shift and multiplicity of each proton resonance . c ) Which multiplets should overlap ? One overlapping resonance is centered at d the other at 8 = 3.70 . Since JAB = 7 Hz ...
Sommario
Measurement and Instrumentation | 1 |
Basic Electrical Variables | 25 |
9 | 47 |
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absorbance absorption amplitude analysis analyzer angle anode applied atoms beam Beer's law capacitance capacitor cathode cell circuit of Fig components concentration constant coulometry curve detection detector determined device diagram differential diode dispersion drop electrical electrode electrolysis emission emitter energy equation example excited feedback filter flame fluorescence frequency grating impedance incident input instrument intensity ionization ions magnetic measurement mercury meter method module molecular molecules monochromator noise obtained Ohm's law operational amplifier optical output voltage oxidation p-n junction peak phase photometer photomultiplier polarized polarography potential potentiometer precision prism proton pulse R₁ R₂ radiation range ratio RC circuit readout redox reduced refractive index resistance resistor resonance result sample scan schematic Section sensitivity shown in Fig signal slit solution species spectral spectrometer spectrophotometer Spectroscopy spectrum substance techniques temperature Thévenin equivalent titration transistor tube V₁ vibrational wave wavelength Wheatstone bridge width ΚΩ