What is the definition of Vibrometry?
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A laser Doppler Vibrometer is based on the principle of the detection of the Doppler shift of coherent laser light, that is scattered from a small area of the test object. The object scatters or reflects light from the laser beam and the Doppler frequency shift is used to measure the component of velocity which lies along the axis of the laser beam.
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Probably ultrasonic....
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DeciBels below 1 Milliwatt) A measurement of power loss in decibels using 1 milliwatt as the reference point. A signal received at 1 milliwatt yields 0 dBm. A signal at .1 milliwatt is a loss of 10 dBm.\n\nOR\n\nDataBase Manager
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The word you're looking for is "measured"..?
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Vibration refers to mechanical motion. The motion may be:\n\nPeriodic (in the form of oscillations) \nAperiodic (in the form of random noise) \nA mixture of the two \nVibration is occasionally desirable. For example the motion of a tuning fork, the reed in a woodwind instrument or harmonica, or the cone of a loudspeaker is desirable vibration, necessary for the correct functioning of the various devices.\nThe vibrating alert in a cell phone or the much larger vibrations of a vibratory compactor are additional examples where the vibration is desired.\n\nVibrating Frequency is the measurement of the number of times that a repeated event occurs per unit of time. It is also defined as the rate of change of phase of a sinusoidal waveform created by vibration.\n\nUnit of frequency of vibration - the number of cycles per second\n=second^(-1)\n=hertz or kilo hertz.\n\n(In SI units, the result is measured in hertz (Hz), named after the German physicist Heinrich Rudolf Hertz. 1 Hz means that an event repeats once per second, 2 Hz is twice per second, and so on. This unit was originally called a cycle per second (cps), which is still used sometimes. Other units that are used to measure frequency include revolutions per minute (rpm) and radians per second (rad/s). Heart rate and musical tempo are measured in beats per minute (BPM).\n\nAn alternative method to calculate frequency is to measure the time between two consecutive occurrences of the event (the period) and then compute the frequency f as the reciprocal of this time.\n\nFrequency of waves:\nFrequency has an inverse relationship to the concept of wavelength. The frequency f is equal to the speed v of the wave divided by the wavelength λ (lambda) of the wave
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yes you can. For real low freq. you can actually do a DC measurement. Just slow the sweep rate way down and you will see it.
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Generally, atoms of a substance vibrate in their positions. Temperature of a substance is directly related to this vibration velocity.
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Relating to or having or hearing with two ears :\n\n"Binaural hearing".. it can be applied to others even..!!!!
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http://en.wikipedia.org/wiki/Sound_waves
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The decibel (dB) is a measure of the ratio between two quantities, and is used in a wide variety of measurements in acoustics, physics and electronics. While originally only used for power and intensity ratios, it has come to be used more generally in engineering. The decibel is widely used in measurements of the loudness of sound. It is a "dimensionless unit" like percent. Decibels are useful because they allow even very large or small ratios to be represented with a conveniently small number (similar to scientific notation). This is achieved by using a logarithm.
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Simple harmonic motion or harmonic motion is a periodic vibration, for example, of a violin string or pendulum, that has a single frequency or an even multiple of one or is symmetrical about a point of equilibrium.
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Wave motion is defined as the movement of a distortion of a material or medium, where the individual parts or elements of the material only move back-and-forth, up-and-down, or in a cyclical pattern.\n\nIt appears as if something is actually moving along the material, but in reality it is just the distortion moving, where one part influences the next.
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Try the sonometer or the resonance experiment
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Using spectrogram analysis, the units of measure are typically hertz (on the frequency axis) and decibels (dB, on the amplitude axis). Either may be expressed linearly or logarithmically.
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What do you want to know? Its a portable data aquisition device typically used for vibration monitoring. They are not real common.
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A motility monitor is a machine that checks the movement of something. There are different kinds - for intestinal movement, for sperm movement, for stomach movement...\n\nWhich machine depends on what is being monitored.
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seismographs and seismometers