| 单词 | hertz |
| 例句 | They measure it in hertz, which is how many peaks go by per second. Understanding Basic Music Theory 2018-01-28T00:00:00Z The next tune up, on the bass sax again, was dedicated to a whale whose song is several hertz off-key, which apparently spells disastrous isolation for an ocean-bound mammal. ArtsBeat: Winter Jazzfest: Colin Stetson - Saxophone Whiz Inspired by a Whale 2013-01-13T09:16:43Z However, for female voices, these noise bursts generally occur between five thousand and seven thousand hertz, whereas, for men, they lie below five thousand hertz. A Century of “Shrill”: How Bias in Technology Has Hurt Women’s Voices 2019-09-03T04:00:00Z Margaret Thatcher famously worked with voice coaches to hone her auditory image, dropping her voice sixty hertz between the nineteen-sixties and the nineteen-eighties. A Century of “Shrill”: How Bias in Technology Has Hurt Women’s Voices 2019-09-03T04:00:00Z It also operates at frequencies greater than 100 hertz, achieves displacements of 140% and can lift 22 times its body weight. Combustion powers bug-sized robots to leap, lift and race 2023-09-19T04:00:00Z In contrast, the researchers involved in this work were looking for a collective hum at much lower frequencies — one-billionth of one hertz, far below the audible range — emanating from everywhere all at once. The Cosmos Is Thrumming With Gravitational Waves, Astronomers Find 2023-06-28T04:00:00Z The infinitesimal expansion and contraction occurs at a frequency of about 10 to 100 hertz and creates a measurable offset between one beam and its perpendicular twin. Gravitational-Wave Search Resumes after Three Years and Lots of Headaches 2023-05-23T04:00:00Z But as the frequency of shaking passes about one hertz, the fingers will become a blur. Fundamentals of Biology 2015-01-01T00:00:00Z At Grange Castle, Eaton's UPS intervenes and frees up power on the grid when the grid's electrical frequency, measured in hertz, fluctuates in a way that indicates it is under stress. Can we make the internet less power-thirsty? 2023-02-09T05:00:00Z He talked about how the differences might have just come down to how many hertz your monitor was capable of or if someone else had a lighter mouse than you. Gaming and apparel brand 100 Thieves is getting into hardware with its first acquisition 2021-10-13T04:00:00Z As the black disc got bigger, the snakes increased their rattling rate up to 40 hertz and then abruptly shot up their rattling frequency to 100 hertz. This Rattlesnake Dares You to Call Its Bluff 2021-08-19T04:00:00Z So the researchers attached the electrodes to 64 volunteers and recorded the frequency in hertz at which their orbital frontal cortex fired when they won a monetary reward in a game. A Better Way to Zap Our Brains 2021-02-24T05:00:00Z The M.I.T.-led team, on the other hand, saw energy levels that were 500 to 1,000 hertz away from predictions, registering as a small curve in the King plot. Possibility of Dark Bosons Entices Physicists 2020-09-30T04:00:00Z They soldered a microphone onto a small circuit board to capture nearby sound and added an amplifier and a frequency filter to specifically increase the volume of high-pitch sounds above 1000 hertz. This $1 device could treat millions with hearing loss 2020-09-23T04:00:00Z The oscillations occurred at a low frequency, of about 1–3 hertz. The brain rhythms that detach us from reality 2020-09-15T04:00:00Z “Using 432 hertz is like a reclamation of sound frequencies,” she says. Kelsey Lu: ‘The white male hetero-patriarchy is being deconstructed’ 2020-09-05T04:00:00Z The system is based on the frequency of the sound waves and, for now, the optimal range is between 300 and 1,000 hertz. Scientists Say You Can Cancel the Noise but Keep Your Window Open 2020-07-11T04:00:00Z This approach improves sensitivity only for gravitational signals in which the frequency is higher than 100 hertz, up to the limit of the detection band6. Quantum fluctuations have been shown to affect macroscopic objects 2020-06-30T04:00:00Z Several excesses seem to cluster around a value of 10 hertz per kilogram of detector mass. Direct Proof of Dark Matter May Lurk at Low-Energy Frontiers 2020-06-09T04:00:00Z Decker explained U.S. electric grids operate at a target frequency of 60 hertz. Electrical fluctuations from virus fast forward Hawaii time 2020-06-05T04:00:00Z “In addressing sound, we shifted an additional 400 hertz and shortened the duration about another millisecond for better sound and feel.” TaylorMade's new SIM Max and Max OS irons find new ways to add face flex - Golf Digest 2020-01-10T05:00:00Z They found that the tower registered pitches of 0.8 and one hertz. Taking the Pulse of a Sandstone Tower in Utah 2019-09-09T04:00:00Z In North America, the gadgets we use operate at 120 volts at a frequency of 60 hertz. Your phone charger will work in Europe; your heating pad — not so much | Produced by Advertising Publications 2019-07-17T04:00:00Z Bathing patients in flashing light and pulsing sounds both tuned to a frequency of 40 hertz might reverse key signs of Alzheimer’s in the brain, according to a paper published in Cell on Thursday. An Hour of Light and Sound a Day Might Keep Alzheimer's at Bay 2019-03-14T04:00:00Z Above a thousand hertz, the brain has a hard time distinguishing vowels. Roomful of Teeth Is Revolutionizing Choral Music 2019-02-04T05:00:00Z Ryan thinks that eons ago, the ancestor of all these species probably evolved an inner ear tuned to roughly 2,200 hertz for some long-abandoned purpose. How Beauty Is Making Scientists Rethink Evolution 2019-01-09T05:00:00Z When the forewing vein was damaged, the wood nymphs’ ears were less sensitive overall, particularly to low frequencies between 750 and 5000 hertz, the team reports today in Biology Letters. These butterflies boost their hearing with an unusual strategy 2018-10-16T04:00:00Z They are called “terahertz” because instead of visible light they “see” at .25 trillion hertz. Will L.A.'s Anti-Terrorist Subway Scanners Be Adopted Everywhere? 2018-09-25T04:00:00Z So when Tsai tuned her light to flash 40 times a second, or 40 hertz, and flickered it at the mice, their brains flickered back—generating gamma waves at a corresponding 40 hertz. An Hour of Light and Sound a Day Might Keep Alzheimer's at Bay 2019-03-14T04:00:00Z Yet bel canto focusses the voice at a frequency more than three times that high—between three and four thousand hertz—so that it can vault over the sound of the orchestra to the audience. Roomful of Teeth Is Revolutionizing Choral Music 2019-02-04T05:00:00Z Moreover, the túngara frog has an inner organ tuned to 2,200 hertz, which is close to the dominant frequency of a chuck. How Beauty Is Making Scientists Rethink Evolution 2019-01-09T05:00:00Z In technical terms, power systems in Europe, and much of Asia and Africa, run on alternating current at 50 hertz, meaning that the flow of electricity changes directions 50 times per second. Clocks Slow in Europe? Blame Kosovo-Serbia Row 2018-03-08T05:00:00Z We found that about 3 hertz of backspin is the best amount; more than that does not help. The Math behind the Perfect Free Throw 2018-03-02T05:00:00Z It’s also not clear if these beneficial effects would appear or if 40 hertz is the “magic” frequency in humans, he says. An Hour of Light and Sound a Day Might Keep Alzheimer's at Bay 2019-03-14T04:00:00Z Ordinary speech has a frequency range of between a hundred and three hundred hertz, she said. Roomful of Teeth Is Revolutionizing Choral Music 2019-02-04T05:00:00Z The strobe was tuned to 40 hertz and was designed to manipulate the rodents’ brainwaves, triggering a host of biological effects that eliminated the plaque-forming proteins. How flashing lights and pink noise might banish Alzheimer’s, improve memory and more 2018-02-27T05:00:00Z The female range is considered anything above 180 hertz. Speech clinic helping transgender clients find new voice 2018-02-09T05:00:00Z White noise has equal power per hertz across all frequencies, while the power per hertz in pink noise decreases as the frequency increases. The secrets behind the audio for the Super Bowl halftime show 2018-02-02T05:00:00Z Two of them add a subtle tone that’s meant to mask my tinnitus, which during my hearing test she pinpointed at about six thousand hertz. High-Tech Hope for the Hard of Hearing 2017-03-27T04:00:00Z All firing rate scales are from 0 Hz to the nearest integer number of hertz above the maximum firing rate. b, Activity of MEC grid cells during the two tasks. Mapping of a non-spatial dimension by the hippocampal–entorhinal circuit : Nature : Nature Research 2017-03-28T04:00:00Z Those of the highest frequency are gamma waves, which range from 25 to 140 hertz. How flashing lights and pink noise might banish Alzheimer’s, improve memory and more 2018-02-27T05:00:00Z In particular, Parkinson's researchers have identified high levels of β-band oscillation — brainwave activity occurring at around 15–30 hertz — within the basal ganglia. Electrotherapy: Shock value : Nature : Nature Research 2016-10-25T04:00:00Z The latest wrinkle: In 2015, the Food and Drug Administration approved the first such device that delivers high frequency stimulation – up to 10,000 hertz – instead of the traditional 50 hertz. New (and Old) Ways to Battle Pain 2016-09-20T04:00:00Z From the nasal loop, O’Brien says, “We calculated a frequency of between 250 and 750 hertz, which is not only pretty low, it also overlaps with the sonic frequencies of a vuvuzela.” Ice Age Beast Honked Like a Dinosaur 2016-02-04T05:00:00Z The more intriguing, yet highly unlikely outcome, would be the detection of a very ordered, narrow-band radio emission less than a hertz wide, which would indicate the presence of technology or an artificial structure. Computers Would Never Have Found 'Alien Superstructure' Star--It Required Citizen Science 2015-10-21T04:00:00Z At the other end of the scale are delta waves, which have the lowest frequency — around 0.5 to 4 hertz. How flashing lights and pink noise might banish Alzheimer’s, improve memory and more 2018-02-27T05:00:00Z In normal speech, loudness ranges between four and five hertz; for screams, the range is 30 to 150 hertz. The Secret to a Good Scream 2015-07-16T04:00:00Z So if the time between each crest was 1 second that would meant the wave frequency was 1 hertz or one cycle per second. How Does WiFi Work? 2015-07-15T04:00:00Z "Flowers move at all kinds of frequencies, but 95 percent of their motions are below 2 hertz," Sponberg says. A robot flower experiment reveals how hawkmoths see at dusk 2015-06-11T04:00:00Z They took it down low, and at the range of 30 to 60 hertz, the fires began to extinguish. When it comes to putting out fire, GMU students show it’s all about that bass 2015-03-22T04:00:00Z A few days later, the team put the mice underneath a custom-built, 6.35-centimeter-diameter coil that emits magnetic waves alternating between 10 hertz and 10 millihertz. Magnetic 'rust' controls brain activity 2015-03-12T04:00:00Z The call came in at 52 hertz, hence the whale's nickname "52." The guy from Entourage will use his fame to find the world's loneliest whale 2015-02-19T05:00:00Z The solitary wanderer emits its metronomic calls at around 52 hertz, a tuba pitch that is, nonetheless, far higher than the calls closest to it — those of the giant blue and fin whales. Filmmakers Set Sights on '52', the World's Loneliest Whale 2015-02-17T05:00:00Z The flywheels will store and then discharge electricity when PJM needs to balance the supply and demand of its grid and maintain a stable frequency of around 60 hertz. Beacon Power To Build A Flywheel Plant To Keep The Grid In Good Health 2013-06-18T19:32:00Z They offer a frequency range of 5 hertz to 30 kilohertz, which is a wide spectrum of frequency response. Review: Stylish, quality headphones get popular 2013-02-16T01:32:25Z And at about 155 hertz, a typical frequency produced by a tuba. The UK's five weirdest sounding places 2012-12-29T02:31:43Z The frequency is extraordinarily high for blue whales, whose calls usually fall somewhere between 15 and 20 hertz. The guy from Entourage will use his fame to find the world's loneliest whale 2015-02-19T05:00:00Z Before the experiment, the songs of the two strains differed by at least six thousand hertz, or as much as nine thousand hertz. Singing Mice May Join Humans and Songbirds As Vocal Learners 2012-10-11T03:15:00.190Z When flying forward, the birds beat their wings about 39.7 hertz. Observatory: For Hummingbirds, It’s Easy to Shift Into Reverse 2012-10-01T21:32:41Z The frequency range on the Realms is a touch tighter at 20 hertz to 20 kilohertz, which may explain why I have to massage the equalizer settings on my player when switching musical genres. Review: Stylish, quality headphones get popular 2013-02-16T01:32:25Z They found correlations between resting-state networks and electrical activity in a band of frequencies around 40 hertz. Neuroscience: Idle minds 2012-09-19T17:21:23.287Z "At the time when the grid collapsed, the frequency was 50.2 hertz," he said, which is normal. India Ink: Overdrawing Not Behind India's Blackout, State Official Says 2012-08-01T08:33:04Z His conclusions: the transmitted signal fell within the 200 hertz to 5000 hertz frequency range, which just so happens to also be an excellent range of frequencies for speech intelligibility. Can You Hear Me Now? Sound Technology of the 19th Century 2012-07-23T18:45:00.417Z When they flew backward, they beat their wings only slightly faster, at 43.8 hertz. Observatory: For Hummingbirds, It’s Easy to Shift Into Reverse 2012-10-01T21:32:41Z They have some vocabulary modifiers well above 20,000 hertz, which is likely to make your neighbour's dog bark. Words and music 2012-02-01T18:21:11.600Z The fish generates an electric field of about 1 millivolt per centimeter at a frequency that ranges from 50 to 2000 hertz. Time on the Brain: How You Are Always Living In the Past, and Other Quirks of Perception 2011-09-16T16:15:10.063Z Mr. Sharan said that 50 hertz of power is the ideal frequency for the grid. India Ink: Overdrawing Not Behind India's Blackout, State Official Says 2012-08-01T08:33:04Z No one wants their bedside lamp to become a dance-club strobe light, which is one reason why power companies chose an AC frequency of 50 or 60 hertz to begin with. How Optical Illusions Can Build a Better Bulb 2011-08-18T23:45:05.210Z In one case, his recording equipment picked up a 200 hertz signal at a complainant's house that was detectable in the lab. Why is 'the hum' such a mystery? 2011-06-13T13:49:50Z When heel striking, the volunteers generated the expected thudding ground reaction forces; when they landed near the front of the foot, the force was still there, though it generally had a lower frequency, or hertz. Well: Are We Built to Run Barefoot? 2011-06-08T04:01:01Z Patients are scanned in an MRI while sound waves with a frequency of 60 hertz pass through plastic tubes to the breasts. Beyond Mammograms: Research Aims to Improve Breast Cancer Screening 2011-05-10T11:45:00.237Z If the power falls below the 49.7 hertz mark, a second warning is issued. India Ink: Overdrawing Not Behind India's Blackout, State Official Says 2012-08-01T08:33:04Z Eastern Japan runs on a 50 hertz current and the rest on 60 hertz. Osaka May End Tokyo’s Lure as Energy Surplus Meets Quake Risk 2011-03-29T15:05:48Z Current 3G technologies can send roughly one bit of data - a one or a zero - per second over each hertz of spectrum. Smartphone use makes cellular networks' collapse a real possibility 2010-11-30T11:00:00Z The “evidence is not concrete for or against barefoot or shod running,” said Allison H. Gruber, a doctoral candidate at the University of Massachusetts and lead author of the hertz study. Well: Are We Built to Run Barefoot? 2011-06-08T04:01:01Z At a rate of less than 60 hertz, and the eye perceives flicker. Novelties: 3-D Effects, Without Glasses, From Cellphones and TVs 2010-07-03T13:52:00Z It did this by mimicking the system's own signal, a tone of 2600 hertz. The Hacker Crackdown, law and disorder on the electronic frontier |
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