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Nuclear magnetic resonance detectors are used when certain nuclei with odd numbered masses spin about an axis in a random fashion. When placed between poles of a strong magnet, the spins are aligned either parallel or anti-parallel to the magnetic field. The nuclei are then irradiated with electromagnetic radiation that is absorbed and places the parallel nuclei into a higher energy state; consequently, they are now in "resonance" with the radiation. Each atom will produce a different spectra depending on their location and adjacent molecules, or elements in the compound. Products & Services
High performance liquid chromatographs (HPLC) use a liquid mobile phase to separate the components of a mixture. The components are dissolved in a solvent and forced to flow through a chromatographic column under high pressure.
High performance liquid chromatograph (HPLC) detectors pass a beam of light through a column effluent as the fluid passes through a low-volume flow cell. Variations in light intensity are recorded and a chromatograph is generated.
Specialty or proprietary products and accessories related to spectrometers.
Magnetic receivers use the electromagnetic principle to receive and analyze signals. The simplest of these devices is the telephone.
Electric and electromagnetic wastewater and water treatment equipment uses electrical charging and magnetic energy to treat water and wastewater.
Product Announcements
Topics of Interest
A customer has an Electronic Spin Resonance (ESR) experiment. ESR is based on the fact that the magnetic moment of an electron precesses in an applied magnetic field, not unlike a child's top in a...
(Read More)
12.13 SELECTIVITY AND BANDWIDTH OF A
PARALLEL-TUNED CIRCUIT
Figure 12.19(a) shows a voltage source V of width impedance Rg driving the
parallel-tuned circuit. Figure 12.19(b) shows an equivalent...
(Read More)
Nuclear magnetic resonance (NMR) is a technique that is used very widely throughout science and medicine. There are approaching 20 journals devoted exclusively to NMR and magnetic resonance imaging,...
(Read More)
Most fluorescent lamps come in tubes of standard diameters, lengths,
and wattage ratings. Diameters come in increments of ⅛ in, and standard
lengths are 2, 3, 4, and 8 ft. The various...
(Read More)
12.1 INTRODUCTION
A two-terminal network, in general, offers a complex impedance consisting
of resistive and reactive components. If a sinusoidal voltage is applied to such
a network, the current...
(Read More)
Technical Articles
American Society for Nondestructive Testing (ASNT)
- Professional Organizations
Leveling the Playing Field
- Level Sensing
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