During REM sleep, the brain generates high -
frequency waves of electrical activity and the eyes flicker; in humans, REM is closely linked to dreaming.
Microwave ovens use low -
frequency waves of electrical and magnetic energy to produce heat to cook food.
Not exact matches
• Blackmore Sensors and Analytics Inc, a Bozeman, Montana - based developer
of frequency - modulated continuous
wave lidar for the automotive industry, raised $ 18 million in Series B funding.
Huawei's newly released full range
of 5G product solutions support millimeter
wave (mmWave), C - band, and all Sub-3 GHz
frequency bands.
Using the 15 GHz and 28 GHz bands, the high
frequencies known as millimeter
wave, the signals in the test can transmit a large volume
of information but don't travel as far or penetrate obstructions as easily as lower
frequencies.
So the Seattle - based startup shifted its focus to a still - developing technology: radio
frequency identification (RFID), the use
of radio
waves, specialized tags, and readers to track the location
of objects.
Scientists have found a correlation between the
frequency of brain
waves and the body's state.
There are five major types
of brain
waves, including delta, theta, alpha, beta and gamma, with delta brain
waves having the slowest
frequency and gamma having the fastest.
«If a person sees life with more acceptance
of the
waves of desire and sexual
frequency flowing like
waves on the ocean, the better resilience and empathy one has throughout their life for their own body and that
of their partner or partners.»
Financial News reports that Vigilant Global, a telecoms company owned by high -
frequency trading firm DRW Trading, has submitted plans to build a 320 - metre tall tower to allow what it calls «a new communications point between the UK and Europe» which will have a «completely unobstructed» line
of sight both optically, and for radio
waves.
After a first
wave of phone porting attacks on the virtual currency community last winter, which was reported by Forbes, their
frequency appears to have ticked up, Mr. Perklin and other security experts said.
Since then, the
frequency and power
of these light
waves has accelerated greatly.
Each time one
of these
waves of light would pour into our atmosphere, the planet's vibration was raised to a slightly higher
frequency, elevating our living Earth — along with us earthlings — to a higher level.
By analogy, we may look at the surface
of the ocean on a calm day and see
waves, and even, if we so choose, assess their amplitude and
frequency.
In either order, if the «
wave»
of our being is anarchic, incompatible in its own self with the pulse and
frequency, so to speak,
of God's Unity - Law - his providence for good - then that impact is part
of the principle and problem
of evil, an influence for disintegration.
The difference between positive and negative electricity, or between high and low
frequency waves, may seem, and in nature may be, partly qualitative; but physics as a theory
of nature takes into account only the spatio - temporal aspects or consequences
of such qualities, whatever the latter may be.
It eliminates the need for a harmful chemical detergent because
of its powerful 42,000 Hz ultrasonic
frequency waves which provide an effective cleaning solution.
During his introduction, Drendan encouraged us to «manifest things» and to «float on a
wave of gratitude,» which is apparently the best
frequency on which to exist.
Putting food on the table is an obvious highlight point
of the day for someone like myself and no doubt someone like you as well if you find yourself here with
frequency (
waves hi).
According to scientists speaking to Forbes in 2015, there's no plausible way for radio
frequency (RF)
waves to cause cancer «without re-writing the laws
of physics and biology.»
Ultrasound is a common test during pregnancy that uses high
frequency sound
waves to look at the anatomy and structures
of the developing baby.
There are also concerns that the
frequency of the sound
waves that bombard baby might cause fetal distress, or just be really loud to baby while in the womb.
The level
of energy exposure to organ tissues transforms into heat energy, in addition to sound
waves at varying
frequency may lead to unseen disruptions in normal activities and functions.
There are also concerns that the
frequency of the sound
waves that bombard baby might cause distress, or just be create unique alterations to baby's development.
But the researchers also found that when a student reported being more engaged, the
frequency of their brain
waves better matched the group.
Like the tuner on a radio, different detectors (bottom row) pick up different
frequencies of gravitational
waves.
Rather than dangerous X-rays, however, the chip beams out
waves in the harmless terahertz
frequency, a little - used portion
of the electromagnetic spectrum between microwaves and far - infrared.
Some maintained that light and other
frequencies of electromagnetic radiation are composed
of particles, while others asserted that electromagnetic radiation is a
wave phenomenon.
The two
frequencies alternated every 40 seconds, reminding Laurent
of the regular oscillations between high -
frequency REM and slow -
wave sleep found in mammals and birds.
Therefore, when an acoustic or mechanical
wave contacts the material, it perturbs it, generating the unique properties that block sound
waves and mechanical vibrations
of certain
frequencies from passing through.
At the center
of the controversy are two blobs about 450 light - years apart that emit radio
waves — light at the low -
frequency end
of the electromagnetic spectrum.
The bubbles can be fashioned by applying radio
waves of the right
frequency to a BEC, Lundblad explains, and at first, researchers hope to simply jiggle the bubbles and see how they react.
Recordings
of neural activity in the frontal cortex
of the rats showed that, like humans with schizophrenia, these rats also lacked the low
frequency burst
of brain activity (delta
wave) during the timing task.
Instead
of such circuits, an SDR uses digital - signal - processing chips to allow a programmer to define the
wave shape
of a radio signal, the
frequency it uses and the power level.
Researchers designed LIGO to spot
waves in the sweet spot for converging black holes and neutron stars, with a
frequency ranging from tens
of hertz to several thousand.
The unit also uses variable
frequencies of ultrasonic
waves to keep pests on their toes and ready to move out!
They also lacked a low
frequency burst
of brain activity (the delta brain
wave) that occurs right at the start
of the trial in healthy subjects.
While the rendezvous was millions
of years in the making, only the final two - tenths
of a second produced gravity
waves with the requisite intensity and
frequency for detection by Advanced LIGO.
The eLISA mission, a space observatory consisting
of three miniature satellites, will hunt for
waves with
frequencies under 1 hertz when it launches in the 2030s.
But just as scientists use radio and gamma - ray telescopes to probe different
frequencies of light, physicists are building detectors sensitive to a range
of gravity
wave frequencies.
A larger number
of frequencies means more possibilities for
wave shaping, just like a composer finds more ways
of expression composing not just for a flute, but for a full orchestra.
«We can tune the intensity and the relative phase
of three different
frequencies,» says Stefan Haessler, «this brings us close to the «perfect
wave», which can be calculated in numerical simulations.»
(In this case, a peak in the audio
wave is represented by an increase in the
frequency of the radio
wave, while a trough is represented as a decrease in
frequency.)
One method for measuring such stiffness depends on a combination
of low -
frequency sound
waves and MRI.
The number
of wave crests arriving from Fast Radio Bursts per second — their «
frequency» — is in the same range as that
of radio signals.
Two years ago, the team observed an odd behavior in their gyroscopes: at certain
frequencies, they could set off a
wave that traveled around the edges
of the material in one direction only.
Gravitational -
wave astronomy is expected to observe more such events in the near future, both in terms
of gravitational -
wave signals and in the more traditional
frequency ranges.
They'll help researchers hunt for gravitational
wave signals below 100 Hz, the
frequency where traces
of black hole mergers can be found.
Because you have to use a radio wavelength that is smaller than the dimensions
of the object you are trying to locate, radar relies on high -
frequency waves, just a few inches long (higher
frequencies have shorter wavelengths).
The number
of times per second that the atoms shift back and forth defines the
wave's
frequency, experienced by the human eardrum and brain as pitch.