MTS is used to describe good parts in terms of the measured distributions of a set of resonant frequencies
When one considers that emissions are absent in ears that have a hearing threshold of 50 dB HL or worse, one can speculate that hearing might be better than expected, perhaps even normal, at these low frequencies
If each device needs a different frequency, there may not be enough frequencies
to go around.
A diverse group of insects, including beetles, katydids, lacewings, and a host of moth species, have body structures that vibrate when struck by the ultrasonic frequencies
used by echolocating bats, says M.
The human ear is relatively insensitive to low frequencies
When combined with frequency comparison data obtained through various satellite-based methods, this time scale also provides a means for absolute comparisons of the frequencies
of NIST primary frequency standards with those of other countries.
But scientists needing to precisely measure frequencies
of early lasers found themselves in a bind: No electronic device counts fast enough to keep up with visible light's ripples, which wiggle at least 46,000 times as fast as the cesium clock's oscillation.
GaN shows great promise for application in high output power amplifiers that support higher frequencies
above the microwave frequency band, since it offers higher saturation electron velocity, higher dielectric breakdown voltage and a higher operating temperature range than GaAs.
However, Evans says, Iridium was "a wake-up call to the radio astronomers to discover that there's a huge demand for radio frequencies
A static preload is applied to the specimen, and a dynamic strain superimposed on the specimen over a range of frequencies
Delivers High Performance Clocking for Digital Entertainment Devices and Other Applications Requiring Multiple Frequencies
The French clock makers are using their fountain clocks to compare the ratio of atomic-transition frequencies
of different atoms--cesium and rubidium--to test the stability of the so-called fine-structure constant, a combination of elementary physical quantities that turns up frequently in atomic physics.