That, they say, gives them access to more telling, high-frequency waves that say a lot more about cognitive intentions.
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Recent discoveries, however, have such medgadgets being powered by photons, hip hop and now high-frequency radio waves.
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Agarwal is in the early stages of further research that can model the human body's role in protecting from radio-frequency electromagnetic waves emitted from cell phones.
The nuclear test monitors pick up "infrasound", or low frequency, waves from about 20 meteors a year -- "if conditions are right, perhaps as small as a pea, " she said.
Because of the distance that low-frequency sound waves can travel under water, a set of four ships emitting sound at 235 decibels could monitor 80% of the world's oceans for submarines.
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Although they have not been found to cause any harm, the cables on conventional pylons, which transmit a three-phase alternating current, generate a strong electric field and a continuous buzz of low-frequency radio waves.
Extrapolating from Dr Freund's laboratory experiments, the strain in a real-life geological fault such as the San Andreas could, as it shifted, generate hundreds of thousands of amperes per cubic kilometre in a fluctuating pattern that would cause very low frequency radio waves to be emitted, thus disrupting the ionosphere.
Their basic concept is to use light to transmit the quantum information using interferometers, which are instruments that change the frequency of light waves, then recombine them to get particular effects.
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Then, the waves' frequency is tweaked and the sample blasted head-on in order to heat it.
Moreover, since the resulting interference pattern also depends on the waves' frequency, the same array can concentrate SAWs in different ways at different frequencies, working the liquid sample in different ways.
The radiation just spread out into space - where it still is and can be detected as weak waves of radio frequency.
The cheapest way to increase capacity is to add more spectrum or to move a network to a lower frequency, which allows radio waves to penetrate walls more easily.
You can knock one of these nuclei from up to down by bathing it in radio waves of a particular frequency (exactly which frequency depends on the element).
And, just as light waves of the same frequency can be made to resonate in step with one another and so form a laser beam, it should be possible to make atoms of the same element resonate similarly.
The number of times it vibrates per second (frequency) and the size of its waves (wavelength) vary inversely.
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That conundrum was solved by getting the high-frequency signals to penetrate deeper using alternating waves of electric and magnetic fields.
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Defenders of high-frequency trading, in which firms send waves of buy and sell orders into the market, often canceling them, say it makes trading more efficient and cheaper for everyday investors.
HSS, by contrast, shoots tightly focused waves of ultrasound (meaning it exceeds the frequency range of human hearing).
These travelling waves occur hundreds of times a night, and most commonly at a frequency, 1 cycle per second, which has been shown to depress the activity of synapses.
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