| 单词 | cycle per second |
| 例句 | The frequency of a wave is the number of cycles per second. Astronomy 2016-10-13T00:00:00Z An 11-inch string on a violin has a frequency of 400 cycles per second. Elementary Algebra 2020-04-22T00:00:00Z There are neuroscientists who think that gamma rhythms, fast brain waves that fluctuate at a frequency of approximately 40 cycles per second, play this role. "Metronome" Neurons Act Like Timekeepers in Mouse Brains 2019-07-18T04:00:00Z He's referring, of course, to the sound-wave frequency of 440 cycles per second, producing the note A in the Western musical scale, and the standard frequency to which musical instruments are most often tuned. Aerosmith's Steven Tyler goes 'Out on a Limb' in new documentary on his solo album debut 2018-05-23T04:00:00Z When jolted, the brain oscillates most vigorously at about 30 cycles per second, roughly the same frequency as the second lowest key on a piano, the researchers report today in Physical Review Letters. Concussions originate from ringing deep inside the brain, modeling suggests 2018-03-30T04:00:00Z If a wave has a frequency of a million cycles per second, then the time for each cycle to go by is a millionth of a second. Astronomy 2016-10-13T00:00:00Z If an 11-inch string on a violin has a frequency of 360 cycles per second, what frequency does a 12 inch string have? Elementary Algebra 2020-04-22T00:00:00Z The new siren sang for 100 seconds at frequencies climbing to thousands of cycles per second. Merging neutron stars generate gravitational waves and a celestial light show 2017-10-16T04:00:00Z The pitch rose to 180 cycles per second in about a tenth of a second before cutting off. Cosmic Vibrations Felt From Black-Hole Merger 3 Billion Light Years Away 2017-06-01T04:00:00Z On average, modes below 33 cycles per second soak up 75% of the total energy imparted to the brain. Concussions originate from ringing deep inside the brain, modeling suggests 2018-03-30T04:00:00Z Normal speech is relatively smooth, with frequencies ranging only between four and five Hertz, or cycles per second. What All the Screaming Is About 2015-07-29T04:00:00Z 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 The four previous events lasted for, at most, a few seconds, with gravitational waves rippling at frequencies of tens of cycles per second. Merging neutron stars generate gravitational waves and a celestial light show 2017-10-16T04:00:00Z Sound frequency “is basically how many cycles per second air is being pushed through a space,” Ms. Perry says. The Idea: An Inventor Wants One Less Wire to Worry About 2013-08-17T18:37:03Z In practice, the Compton frequency for an atom is far too high to be measured by any electronic counter—something like a million-billion-billion cycles per second. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z At an altitude of 75 km, streamers would emit radio waves at frequencies below 3 kilohertz, or 3000 cycles per second, the researchers reported last month in Geophysical Research Letters. ScienceShot: Broadcast From On High 2012-12-20T17:15:00Z Comparing sea waves to Mhz and Ghz, these waves are moving at 1 million and 1 billion cycles per second in the air! How Does WiFi Work? 2015-07-15T04:00:00Z One is regulation, which means injecting or subtracting power rapidly to keep the grid at a strict 60 cycles per second, the alternation in alternating current. Green Blog: Better Batteries: Not Just for Cars Anymore 2011-10-31T20:20:47Z All of the wave frequencies used for commerce and government communication—roughly from 9,000 cycles per second to 275 billion cycles per second—are together referred to in Washington as “the spectrum.” Riding the Wrong Wave 2011-10-27T21:00:43Z It is believed the worm rapidly cycled the centrifuges to 1410 cycles per second and then slammed on the brakes, slowing them to 2 cycles. Is Obama Planning to Lose World War III? 2011-05-25T03:41:14Z The average dominant frequency of notes in the short and long series alike is 3400 cycles per second. A Review of the Middle American Tree Frogs of the Genus Ptychohyla 2011-02-28T03:00:32.093Z If the pace strays too far from 60 cycles per second, equipment like pumps and motors run too fast or too slow and a variety of equipment will shut down to avoid getting damaged. Green: Hold that Megawatt! 2011-01-07T13:18:01Z The North Carolina State engineers calculated the ideal rate of free-throw backspin at three cycles per second. In basketball, shooting angle has a big effect on the chances of scoring 2010-03-16T04:00:00Z These were adapted to be run constantly from some source of power, delivering ringing current to the operators' keyboards at from 16 to 20 cycles per second. Cyclopedia of Telephony and Telegraphy, Vol. 2 A General Reference Work on Telephony, etc. etc. The method for keeping the blades moving together is as follows: The blades are made to vibrate at their resonant frequency, which is approximately 64 cycles per second. LRL Accelerators The 184-Inch Synchrocyclotron Amateur transmitting sets usually have oscillators which run at well over a million cycles per second. Letters of a Radio-Engineer to His Son But when I added undamped vibration at twelve thousand to fifteen thousand cycles per second, I could induce failure pretty quickly. The Trouble with Telstar A zone of mechanical vibrations, of a frequency of 500,000 cycles per second, was created by a large quartz crystal in the water, which was electrically operated. Astounding Stories of Super-Science, August 1930 The alternators are of the three-phase type, making 1,200 revolutions per minute and delivering current at a frequency of 60 cycles per second at a potential of 11,000 volts. The New York Subway Its Construction and Equipment Thus 50~ would indicate a frequency of fifty cycles per second. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. You see the question is not one of how far apart two signals are in number of cycles per second. Letters of a Radio-Engineer to His Son Such a current usually has a frequency of between 200 and 2,000 cycles per second. The Radio Amateur's Hand Book If we started with a very low-frequency alternating current, say one of fifteen or twenty cycles per second, you wouldn’t say you heard a note at all. Letters of a Radio-Engineer to His Son That is, they are so designed as to be responsive to currents having a frequency of sixty cycles per second, for instance, and to be unresponsive to currents of any other frequency. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. Ringing currents ordinarily have a frequency ranging from about 16 to 75 cycles per second, while voice currents have frequencies ranging from a few hundred up to perhaps ten thousand per second. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. What the listener then hears is a musical note with a frequency corresponding 173to that number of vibrations a second, that is, a note with a frequency of one thousand cycles per second. Letters of a Radio-Engineer to His Son The current from a generator flows through the primary coil of the transformer and the alternations of the usual lighting current is 60 cycles per second. The Radio Amateur's Hand Book |
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