echo sounder, hydrophone, azimuthal, microseismic, cherenkov radiation, gradiometer, amplitude modulation, voltmeter, fluorometer, sensor, sonde, directivity, inclinometer, resonant cavity, spectrograms, dipole moment, millivolt, spectroscopic analysis, strain gage, dropsonde, seismometer, sounders, polyphase, telemetry, pulser, spectro, polarimetry, centroid, calorimetric, pyrometers, circular polarization, coriolis, heterodyne, transducer, ammeter, doppler, voltage divider, waveforms, multispectral, gravimetry, strain gauge, bathymetry, chromatograph, quadrature, photoelectron, variable resistor, radiometer, elint, microvolt, dipole, tachometers, flowmeter, micromanipulator, electromyography, vibrometer, electret, bolometer, transmitter, spectrometric, amplitudes, piezoelectric crystal, acoustic impedance, resonators, directional antenna, otoliths, ultrasonic, odometry, backscattering, magnetopause, multimeter, scintillator, vernier, sonar, acoustic wave, lightwave, lidar, gyrocompass, magnetization, directionality, decimeter, sinusoid, theodolite, seismograph, magnetisation, milliampere, capacitances, chemotaxis, electromagnetic, thermopile, niton, reflectometer, radiolocation, spectrographic, freq, phototransistor, measurements, antineutrinos, airglow, compressional, waveguide, pseudorandom, global positioning system, actuator, borehole, accelerometer, anemometer, galvanometer, joist, loudspeaker, magnetometer, micrometer, relay, sounding, accelerometers, amplifier, billboard, ccd, coil, counter, dataset, dc, discriminator