| 单词 | standing wave |
| 例句 | Figure 3.11: The standing waves in the tubes are actually longitudinal sound waves. Understanding Basic Music Theory 2018-01-28T00:00:00Z But there are also many standing waves that do fit. Understanding Basic Music Theory 2018-01-28T00:00:00Z The two most common — strings and hollow tubes — will be discussed below, but first let's finish discussing what makes a good standing wave container, and how this affects music theory. Understanding Basic Music Theory 2018-01-28T00:00:00Z The standing waves in these carefully-shaped-and-sized idiophones — for example, the blocks on a xylophone — produce pitched tones, but again, the patterns of standing waves in these instruments are a little too complicated for this discussion. Understanding Basic Music Theory 2018-01-28T00:00:00Z The standing waves in a wind instrument are a little different from a vibrating string. Understanding Basic Music Theory 2018-01-28T00:00:00Z For any narrow "container" of a particular length, there are plenty of possible standing waves that don't fit. Understanding Basic Music Theory 2018-01-28T00:00:00Z Instead, waves would seem to be appearing and disappearing regularly at exactly the same spots, so these trapped waves are called standing waves. Understanding Basic Music Theory 2018-01-28T00:00:00Z They are tones caused by standing waves produced in or on the instrument. Understanding Basic Music Theory 2018-01-28T00:00:00Z Figure 3.7: There is a whole set of standing waves, called harmonics, that will fit into any 11container11 of a specific length. Understanding Basic Music Theory 2018-01-28T00:00:00Z For the purposes of understanding music theory, however, the important thing about standing waves in winds is this: the harmonic series they produce is essentially the same as the harmonic series on a string. Understanding Basic Music Theory 2018-01-28T00:00:00Z So the properties of these standing waves, which are always produced in very specific groups, or series, have far-reaching effects on music theory. Understanding Basic Music Theory 2018-01-28T00:00:00Z But any wavelength that doesn't have a node at each end of the string, can't make a standing wave on the string. Understanding Basic Music Theory 2018-01-28T00:00:00Z Most sound waves, including the musical sounds that actually reach our ears, are not standing waves. Understanding Basic Music Theory 2018-01-28T00:00:00Z All standing waves have places, called nodes, where there is no wave motion, and antinodes, where the wave is largest. Understanding Basic Music Theory 2018-01-28T00:00:00Z But another great container for standing waves actually holds standing waves of air inside a long, narrow tube. Understanding Basic Music Theory 2018-01-28T00:00:00Z One "container" that works very well to produce standing waves is a thin, very taut string that is held tightly in place at both ends. Understanding Basic Music Theory 2018-01-28T00:00:00Z To help you imagine this, here are animations of a single wave reflecting back and forth and standing waves. Understanding Basic Music Theory 2018-01-28T00:00:00Z NOTE: Although standing waves are harder to get in water, the phenomenon does apparently happen very rarely in lakes, resulting in freak disasters. Understanding Basic Music Theory 2018-01-28T00:00:00Z At the Eisbach, a man-made river that cuts through the park, a standing wave sees a regular rotation of wetsuit-wearing surfers taking turns in the three-foot break until they tumble into the rushing water. In Munich and Dessau, Art and Design Call. But History Is Even More Compelling. 2019-09-24T04:00:00Z We discussed standing waves, dark matter and when, if at all, Walter Murch sleeps. Swimming against the tide: Lawrence Weschler on 'Waves Passing in the Night: Walter Murch in the Land of Astrophysicists' 2017-04-14T04:00:00Z The title of the exhibition, "Resonance," applies a scientific metaphor to Davis' "in-between position," which is "much like standing waves," Wieczorek adds. Review: Scientist-artist Joe Davis' mind-bending works at UW gallery 2011-02-10T20:56:03Z At one extreme, the one that would get him a Nobel Prize, if he’s right about this is behaving as if it were a standing wave, remember those standing waves?… Swimming against the tide: Lawrence Weschler on 'Waves Passing in the Night: Walter Murch in the Land of Astrophysicists' 2017-04-14T04:00:00Z “It sounds like God because there’s no square to it, it has no standing waves, because it’s all the insides of these big logs one on top of another,” Young said. Neil Young rebuilds a Rockies barn and reunites Crazy Horse 2021-12-09T05:00:00Z It slowly spiralled away northwards until it reached the point where the incoming tide pouring through the sound hit the Atlantic swell, creating standing waves some two metres high that felt distinctly unsafe. The primal thrill of sharks: the emotional case for rewilding the sea 2017-02-04T05:00:00Z Especially for beginners, don’t expect your skill set from the ocean to translate to a standing wave, or vice versa. Surfin’ WA? Get started in coastal Westport or inland Chelan 2023-07-28T04:00:00Z A second later your world explodes: the raft dives into a deep trough and smashes into a standing wave, the first of many. Steep, freezing and fast: California's epic snowpack promises a whitewater rafting season for the ages 2023-04-14T04:00:00Z It was gushing so hard that it created a standing wave. Battered coastline, flooding rivers trap residents, bring misery in Santa Cruz County 2023-01-10T05:00:00Z Shortly after launch, we hit a train of six-foot standing waves that explode over the bows, smacking us with a 45-degree wake-up call. In Idaho, R & R means rapids and relaxation 2022-10-07T04:00:00Z Not long after lava began to flow, they saw standing waves near the source, called the vent. Watch: Enormous waves of lava can help predict volcanic flows 2022-10-03T04:00:00Z Pros, however, relish the chance to practice tricks on a standing wave because they can so quickly hop back on the wave. Surfin’ WA? Get started in coastal Westport or inland Chelan 2023-07-28T04:00:00Z They are permitted to use any materials necessary; however, their lab procedure must utilize standing wave patterns. College Physics for AP Courses 2015-08-12T00:00:00Z As we shall see, standing waves play an important role in our understanding of the electronic structure of atoms and molecules. Chemistry 2019-02-14T00:00:00Z The Tanis fossils also indicated that a huge standing wave of water swept through after the impact, burying the local denizens alive. A good day to die: doom for the dinosaurs came in springtime 2022-02-23T05:00:00Z Even aerial images of standing waves would be helpful to estimate depth and flow rate, she says. Watch: Enormous waves of lava can help predict volcanic flows 2022-10-03T04:00:00Z Seiche, its namesake, means a standing wave in a body of water. UC San Diego is selling the coastal home of famed oceanographer Walter Munk 2021-12-06T05:00:00Z A group of students were tasked with collecting information about standing waves. College Physics for AP Courses 2015-08-12T00:00:00Z The simplest example of a standing wave is a one- dimensional wave associated with a vibrating string that is held fixed at its two end points. Chemistry 2019-02-14T00:00:00Z In May, Lakeside Surf opened the world’s largest standing wave — up to 6 feet tall and 54 feet wide. Summertime fun in the sun: Lake Chelan | Provided by Western Washington Toyota Dealers 2021-06-09T04:00:00Z It might even be possible to use the same technique to estimate the flow rates of other fast-flowing hazards that exhibit standing waves, such as volcanic mud flows or debris flows during floods, Dietterich says. Watch: Enormous waves of lava can help predict volcanic flows 2022-10-03T04:00:00Z Heavy, rigid particles and gas bubbles are attracted to the points of minimum and maximum amplitude of these standing waves, leading to gravity-countering effects. Vibration overcomes gravity on a levitating fluid 2020-09-01T04:00:00Z The student finds that a standing wave with one antinode is formed on the string when the frequency of the oscillator is f0. College Physics for AP Courses 2015-08-12T00:00:00Z The energies of the standing waves with a given amplitude in a vibrating string increase with the number of half-wavelengths n. Chemistry 2019-02-14T00:00:00Z These characteristic oscillations, called eigenmodes, are standing waves, like the standing sound waves responsible for the sounds of musical instruments such as violins and oboes. A glimpse inside δ Scuti stars 2020-05-12T04:00:00Z Tarquini notes that images or video of standing waves in such disasters wouldn’t help with real-time hazard assessment, because these events typically only last for an hour or less. Watch: Enormous waves of lava can help predict volcanic flows 2022-10-03T04:00:00Z Then, all it takes is an ideologue or ideology to jump in and claim that standing wave as their own. We've spent the decade letting our tech define us. It's out of control 2019-12-29T05:00:00Z But while a current in a circuit needs a complete path, an antenna has a varying charge distribution forming a standing wave, driven by the AC. College Physics for AP Courses 2015-08-12T00:00:00Z An example of two-dimensional standing waves is shown in Figure 6.8, which shows the vibrational patterns on a flat surface. Chemistry 2019-02-14T00:00:00Z The resulting interference allows standing waves to form, like on a drumhead. Solar Jets Cause Standing Waves in Earth's Magnetic Field 2019-03-19T04:00:00Z Previously, Callaway irons featured an internal “standing wave,” where the structure of the iron’s sole curved back on itself in one flowing piece of steel kept mass low. Callaway Big Bertha irons aim to create new distance potential with shape-shifting design - Golf Digest 2018-11-13T05:00:00Z The tungsten infused part rises up from the sole in what Callaway calls its “internal standing wave.” Callaway Rogue iron line pushes spring-like effect limits but with a new material focus on feel—and there's hybrids, too! - Golf Digest 2018-01-18T05:00:00Z An incoming electromagnetic wave accelerates electrons in the antenna, setting up a standing wave. College Physics for AP Courses 2015-08-12T00:00:00Z Other important wave phenomena include standing waves, periodic oscillations, and vibrations. Chemistry 2019-02-14T00:00:00Z Later, I bike down to Boise Whitewater Park, where two artificially sluiced standing waves draw kayakers and surfers but, alas, I’ll have to return to catch this. You’re going where? Boise, Idaho. 2017-12-13T05:00:00Z For Murch, this involves a mysterious gravitational standing wave superimposed on the solar system. Opinion | Whose scientific theories are permitted into the mainstream? 2017-03-17T04:00:00Z The company’s “standing wave” internal weighting pad is part of the frame that supports the cup face design. New Steelhead XR irons mix Callaway's old reliable shape with some modern horsepower - Golf Digest 2016-08-23T04:00:00Z Interference and superposition lead to standing waves and beats. College Physics for AP Courses 2015-08-12T00:00:00Z This technique relies on sound waves reflecting off one another to create a standing wave, which holds the particle in the air. GauntLev is literally a gauntlet that levitates particles 2016-05-17T04:00:00Z Light moved down the wire in both directions, creating a standing wave of photons, which the electron microscope was able to capture by focusing on the wire. This incredible electron micrograph shows light as both a particle and a wave 2015-03-02T05:00:00Z A vibrating plate generates a sound wave that bounces against another surface to create a stable standing wave. A Momentous Shift for Sonic Levitation 2013-07-15T20:05:00Z The convergence can often create standing waves, whirlpools and chaotic water that can easily tip a kayak. Veterans Compete in Mayor?s Cup Kayak Race 2010-08-15T03:19:00Z Interference and superposition lead to standing waves and beats. College Physics for AP Courses 2015-08-12T00:00:00Z Now one ear seemed muted by a temporary difference of air pressure where a standing wave lingered for a second or two. Space Tug On the outside it makes one long, straight rush into a line of white-crested standing waves. Little Rivers; a book of essays in profitable idleness When an electron is bound to an atom, its wavelength must fit into a small space, something like a standing wave on a string. College Physics for AP Courses 2015-08-12T00:00:00Z Waves on the glass of milk are one example of standing waves. College Physics for AP Courses 2015-08-12T00:00:00Z Only the resonant frequencies interfere constructively to form standing waves, while others interfere destructively and are absent. College Physics for AP Courses 2015-08-12T00:00:00Z There are other standing waves, such as on guitar strings and in organ pipes. College Physics for AP Courses 2015-08-12T00:00:00Z With the glass of milk, the two waves that produce standing waves may come from reflections from the side of the glass. College Physics for AP Courses 2015-08-12T00:00:00Z A closer look at earthquakes provides evidence for conditions appropriate for resonance, standing waves, and constructive and destructive interference. College Physics for AP Courses 2015-08-12T00:00:00Z The building height matches the condition for setting up a standing wave for that particular height. College Physics for AP Courses 2015-08-12T00:00:00Z From the toot made by blowing over a bottle, to the characteristic flavor of a violin’s sounding box, to the recognizability of a great singer’s voice, resonance and standing waves play a vital role. College Physics for AP Courses 2015-08-12T00:00:00Z In situations where the interfering waves are confined, such as on a fixed length of string or in a tube, standing waves can result. College Physics for AP Courses 2015-08-12T00:00:00Z The resultant looks like a wave standing in place and, thus, is called a standing wave. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 16.40 and Figure 16.41 show three standing waves that can be created on a string that is fixed at both ends. College Physics for AP Courses 2015-08-12T00:00:00Z Nodes are the points where the string does not move; more generally, nodes are where the wave disturbance is zero in a standing wave. College Physics for AP Courses 2015-08-12T00:00:00Z The incoming and reflected sounds form a standing wave in the tube as shown. College Physics for AP Courses 2015-08-12T00:00:00Z We will see in later chapters that standing waves are crucial to many resonance phenomena, such as in sounding boxes on string instruments. College Physics for AP Courses 2015-08-12T00:00:00Z A standing wave is one in which two waves superimpose to produce a wave that varies in amplitude but does not propagate. College Physics for AP Courses 2015-08-12T00:00:00Z Nodes are points of no motion in standing waves. College Physics for AP Courses 2015-08-12T00:00:00Z An antinode is the location of maximum amplitude of a standing wave. College Physics for AP Courses 2015-08-12T00:00:00Z Interference and superposition lead to standing waves and beats. College Physics for AP Courses 2015-08-12T00:00:00Z Waves on a string are resonant standing waves with a fundamental frequency and can occur at higher multiples of the fundamental, called overtones or harmonics. College Physics for AP Courses 2015-08-12T00:00:00Z This interference forms a standing wave, and the air column resonates. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 17.29 The same standing wave is created in the tube by a vibration introduced near its closed end. College Physics for AP Courses 2015-08-12T00:00:00Z We have emphasized sound applications in our discussions of resonance and standing waves, but these ideas apply to any system that has wave characteristics. College Physics for AP Courses 2015-08-12T00:00:00Z Quantization of energy also resembles a standing wave on a string that allows only particular harmonics described by integers. College Physics for AP Courses 2015-08-12T00:00:00Z |
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