Sentences with phrase «generated by frequency»
For example, the wavelength of 355 nm can be generated by frequency tripling the output of a 1064 - nm Nd: YAG or Nd: YVO4 laser, and 266 - nm light is obtained with two subsequent frequency doublers, which in effect quadruple the laser frequency.
https://www.rp-photonics.com/ Not exact matches
In a clinical study Fanton determined that the lower temperatures generated by radio frequency could, with minimal invasiveness, shrink and tighten ligaments, helping to prevent later dislocations.
Mexico City fast became one of the best - studied earthquake zones in the world and scientists now know that buildings of these heights reacted to the particular frequency generated by the shake - amplifying landfill.
Today's ground - based instruments like LIGO and Virgo observe high frequencies, but to detect lower frequencies, we'll need an extremely quiet place that's sheltered from any disturbances — even gravitational forces as minuscule as those generated by a mosquito.
«The signals are not only weak, but they appear at radio frequencies that are used by communication devices and radars, which generate signals billions of times stronger than the cosmic ones that we are trying to detect.»
Infrasonic waves, with frequencies much lower than an audible voice, can be generated by sources as diverse as volcanoes, earthquakes, rocket launches and meteor air blasts.
«Dual frequency comb generated on a single chip using a single laser: Columbia Engineers are the first to miniaturize dual - frequency combs by putting two frequency comb generators on a single millimeter - sized silicon - based chip; could lead to low - cost, portable sensing, and spectroscopy in the field in real - time.»
A power inverter can make the conversion to AC, but a typical inverter with the required capabilities contains about 300 pounds of material: a computer to change the frequency of alternating current as motor speed changes, massive switches, and cooling equipment to dissipate the heat generated by the heavy current.
Diversity of objects and frequency of those in pairs not easily generated by standard models of planet formation.
This demonstration was enabled by a new type of chip - scale light source developed at EPFL, generating optical frequency combs.
But the low - frequency waves generated by giant landslides are occasionally hidden in the mix of seismic vibes rumbling through Earth's crust, too, he notes.
Anatomy of a Comb Optical frequency combs are generated by devices called mode - locked lasers, which create ultrashort pulses of light.
The ARM method, on the other hand, uses a gentle acoustic wave generated by a similar power as ultrasound imaging and at a lower frequency.
Researchers at the University of Southampton are investigating the scope for neutralising low - frequency bass notes by generating «antiphase» sound with an ordinary hi - fi system.
«The barrier is temporary opened at a desired location for approximately 2 hours by a small elevation of the temperature generated by the nanoparticles when exposed to a radio - frequency field,» explained first author and co-inventor Seyed Nasrollah Tabatabaei.
It has been shown, however, that the sound generated at the source can exhibit harmonic overtones (Beckers et al., 2003) and that cyclical movements of the hyoid skeleton or expansion of the cervical esophagus filter these out of the signal by tuning the oropharyngeal — esophageal cavity (OEC) to the fundamental frequency of the song (Riede et al., 2004; Riede et al., 2006; Riede and Suthers, 2009).
To find an answer to this question, she and her colleagues from the Max Planck Institute of Quantum Optics in Garching have investigated in the past few years how such «precision frequencies,» as they can be generated by an optical atomic clock, can be sent on a journey.
Nonlinear optical effects are widely used by engineers and scientists to generate new light frequencies, perform laser diagnostics and advance quantum computing.
Using accelerometers to determine the calling behavior of tagged baleen whales Low - frequency acoustic signals generated by baleen whales can propagate over vast distances, making the assignment of calls to specific individuals problematic.
Intermediate frequency magnetic fields generated by an induction heating (IH) cooktop do not affect genotoxicities and expression of heat shock proteins.
Scalp EEG is generated almost entirely by the cerebral cortex, and even if it falls into a certain frequency range, this can not be taken to indicate that it has any functional dependence on the hippocampus.
Because the waves are generated by and pass through different sections of the sun, the wave frequency reveals clues about the inside of the sun and allows scientists to chart changes in the star's life.
«Optomechanics is an area of research in which extremely minute forces exerted by light (for example: radiation pressure, gradient force, electrostriction) are used to generate and control high - frequency mechanical vibrations of microscale and nanoscale devices,» explained Gaurav Bahl, an assistant professor of mechanical science and engineering at Illinois.
The meaning of this Law of Attraction quote by Lao Tzu is that our vibrational frequency is generated by our soul and emanates out to the universe.
A great resource that automatically generates charts and graphs by entering your data into the frequency table, this saves plenty of time.
Though any net profits generated by a fund must be passed on to shareholders at least once a year, the frequency with which different funds make distributions varies widely.
These new paintings are based on the artist's series of hundreds of computer - generated drawings created in homage to the exchange between artist and poet Brion Gysin (1916 — 1986) and writer William S. Burroughs (1914 — 1997) surrounding Gysin's «dream machine,» a device built by Ian Somerville in the late 1950s that uses oscillating light frequencies to stimulate the optical nerves while the viewer's eyes are closed.
A «phantom tone» is not equivalent to the sum of its parts: it is a unique frequency generated by the non-linear combination of its components.
According to a study by U.S. noise control engineer Rick James, wind farms generate the same symptoms as Sick Building Syndrome — the condition that plagued office workers in the Eighties and Nineties as a result of what was eventually discovered to be the Low Frequency Noise (LFN), caused by misaligned air conditioning systems.»
One aspect of this is the capacity to generate additional revenue by selling electricity into the frequency regulation segments of regional grid power markets.
Literature reviews of previous studies serve a purpose as do the plethora of separate studies by acousticians, sleep experts and physicians, many of which draw the conclusion there is a strong prima facie case that low - frequency noise generated by wind turbines causes chronic sleep deprivation in some people which then degenerates to adverse health impacts.
For those unfortunates forced to live cheek - by - jowl with these things, it isn't just incessant turbine generated low - frequency noise and infrasound that drives neighbours nuts.
The consequences of exposure to impulsive infrasound and low frequency noise generated by wind turbines were also clearly well known to the global wind industry, because of the dramatic change in design which resulted, and because the results were presented at the AWEA sponsored conference.
**** The wind industry has known about, attempted to cover up and lied about the adverse health effects caused by incessant turbine generated low - frequency noise and infrasound for over 30 years; and knowing full - well that the dB (A) weighting is irrelevant to measuring the low - frequency noise spectrum, wrote their own «rules» that even make the risible -LSB-...]
He went on to say «It found many people living near wind turbines at a wind farm near Cape Bridgewater in Victoria are suffering health complaints caused by low - frequency noise generated by wind turbines».
Curious that Danes should complain about precisely the same effects from the incessant low - frequency noise and infra - sound generated by giant fans that Vestas» victims at Macarthur in Victoria do?
Trying to explain the pulsing, rhythmic low - frequency noise generated by wind turbines to someone who hasn't had to live with it, is like trying to explain a migraine to someone that's never had a headache.
STT has reported on cases in nuisance being pursued against wind farm operators by neighbours being driven nuts by the incessant low - frequency noise and infra - sound generated by giant fans (see our post here).
Using the tag «renewable energy» in a cynical effort to «justify» the suffering caused to the health and well - being of hard - working, tax - paying citizens by incessant turbine generated low - frequency noise and infrasound is nothing short of monstrous (see our post here).
**** Australia is blessed with a former tobacco advertising guru who is paid a packet by wind power outfits — like near - bankrupt Infigen — to pedal a story that the adverse health impacts caused by incessant turbine generated low - frequency noise and infrasound (such as sleep deprivation) are the product of «scare - mongering» — which, on his -LSB-...]
STT followers will remember Rusty as the creator of the «Atari defence ``, which he conjured up in answer to the highly relevant work done by NASA in the 1980s, that proved the direct causal relationship between turbine generated low - frequency noise and infrasound and adverse health effects, and which Rusty and his ilk have spent 30 years covering up, ever since (see our post here).
Australia's National Health and Medical Research Council has long since disqualified itself as a body fit, willing, or even able to investigate and report on the known and obvious consequences to human health and well - being caused by incessant turbine generated low - frequency noise and infrasound.
«PEOPLE living near wind farms face a greater risk of suffering health complaints caused by the low - frequency noise generated by turbines, a groundbreaking study has found.»
the limit of force that can be generated by the paddle, combined with the mass it's driving will filter out high frequency motions.
In general, there are several ways that a given generating facility of any kind can make money: by providing energy; by offering capacity on demand; and by providing what are called ancillary services (things like voltage and frequency regulation, which ensure the stability of the grid).
«However, it is physically and biologically plausible that low frequency noise generated by wind turbines can affect people, and the author puts forward several possible theories regarding this.»
Placing the 2 channels: In a 2.1 channel setup all audio (save for the low frequency effects generated by the subwoofer) will be produced by the left and right channels.
The speakers also boast an integrated long - stroke woofer, with a diameter of approximately five inches, which generates sounds from the low - frequency range to deep bass that is typically produced by subwoofers.
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Although the maltreated and comparison groups were comparable in terms of racial composition, to prevent spurious associations that can result from variation in allele frequency and prevalence of trait by population (24), ancestry proportion scores were generated and included as a covariate in all analyses.