| 单词 | wavefront |
| 例句 | As the wavefront strikes the mirror, wavelets are first emitted from the left part of the mirror and then the right. College Physics for AP Courses 2015-08-12T00:00:00Z To get enough photons in such short exposures, the wavefront sensor requires a bright source of light above the atmosphere. Adaptive Optics Branches Out 2021-04-30T04:00:00Z By contrast, the higher a strain’s growth rate, the sooner it becomes the predominant strain in the expanding wavefront, and so the earlier it deposits settlers. A rule from bacteria to balance growth and expansion 2019-11-05T05:00:00Z If we can measure those interference patterns—go around that wavefront and say there’s constructive interference here, destructive interference here—we can put together what that black hole looks like. Finding "Fringes": New Event Horizon Telescope Detections Start Trickling In 2015-05-22T04:00:00Z A nuke test—even one below ground—sets off a great wavefront of what’s known as infrasound, or extremely low frequency sounds inaudible to the human ear. Meteor Hit: Investigating a Cosmic Crime Scene 2013-06-26T10:50:29Z The direction of propagation is perpendicular to the wavefront, as shown by the downward-pointing arrows. College Physics for AP Courses 2015-08-12T00:00:00Z With the laser attached to the side of the telescope and tracking its movements, this artificial star is always visible to the wavefront sensor. Adaptive Optics Branches Out 2021-04-30T04:00:00Z My bet is that to get a muscular pump, the electrical activity has got to spread as a wavefront.” Artificial Jellyfish Built from Rat Cells 2012-07-23T17:15:00.687Z But if a beam is twisted, then the wavefront rotates around the beam's direction of propagation in a spiral, creating a vortex and leaving the beam with zero intensity at its centre. Twisted Radio Waves Could Expand Bandwidth for Mobile Phones 2012-03-03T01:15:00.423Z The giant plasma cloud pushed an advancing wave of energized protons at the Earth, and that wavefront is now triggering the radiation storm in progress in the atmosphere. Biggest solar storm since 2005 underway, will peak Tuesday 2012-01-23T16:11:00Z Each wavelet in the figure was emitted when the wavefront crossed the interface between the media. College Physics for AP Courses 2015-08-12T00:00:00Z Most current imaging technologies assume that this wavefront is roughly flat where it meets the imaging detector — a reasonable assumption for a detector that intercepts only a very small fraction of the sphere. Three-dimensional technique on trial 2011-12-14T18:20:26.257Z A wavefront is the long edge that moves, for example, the crest or the trough. College Physics for AP Courses 2015-08-12T00:00:00Z This, they point out, is what would be expected if different portions of the wavefront traverse the plane at different times. Twisted Radio Waves Could Expand Bandwidth for Mobile Phones 2012-03-03T01:15:00.423Z Each point on the wavefront emits a semicircular wave that moves at the propagation speed v . College Physics for AP Courses 2015-08-12T00:00:00Z Figure 27.7 Huygens’s principle applied to a straight wavefront traveling from one medium to another where its speed is less. College Physics for AP Courses 2015-08-12T00:00:00Z The new wavefront is a line tangent to the wavelets and is where we would expect the wave to be a time t later. College Physics for AP Courses 2015-08-12T00:00:00Z The new wavefront is a line tangent to the wavelets. College Physics for AP Courses 2015-08-12T00:00:00Z The wavelets closer to the left have had time to travel farther, producing a wavefront traveling in the direction shown. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 27.6 Huygens’s principle applied to a straight wavefront striking a mirror. College Physics for AP Courses 2015-08-12T00:00:00Z The edges of the wavefront bend after passing through the opening, a process called diffraction. College Physics for AP Courses 2015-08-12T00:00:00Z The wavelets shown were emitted as each point on the wavefront struck the mirror. College Physics for AP Courses 2015-08-12T00:00:00Z The tangent to these wavelets shows that the new wavefront has been reflected at an angle equal to the incident angle. College Physics for AP Courses 2015-08-12T00:00:00Z Since the speed of light is smaller in the second medium, the waves do not travel as far in a given time, and the new wavefront changes direction as shown. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 27.9 Huygens’s principle applied to a straight wavefront striking an opening. College Physics for AP Courses 2015-08-12T00:00:00Z The new wavefront is a line tangent to all of the wavelets. College Physics for AP Courses 2015-08-12T00:00:00Z It states that each point on a wavefront can be considered a new wave source. College Physics for AP Courses 2015-08-12T00:00:00Z |
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