试题来源: 解析 B。解析:amplitude是振幅,它表示的是波的振动幅度。frequency是频率,它表示的是单位时间内完成周期性变化的次数,也就是每秒内波的完整周期数。所以这里代表每秒波的完整周期数的是frequency,A选项amplitude不符合,C选项both错误,D选项neither不对。
The CCD camera includes a number of micro-sensors arranged in linear arrays of pixels. The image generated by the CCD camera is processed by an electronic card with a non-volatile EPROM. The analog signal thus obtained is analysed to determine the amplitude and frequency of the waves.LE GOFF...
Regardless of the type of wave or the medium through which it travels, all waves can be described and measured using the following characteristics: amplitude, frequency, wavelength, speed, and period. To start - what is the frequency of a wave?View...
Frequency-dependent attenuation of S and coda waves in Erzincan region (Turkey) The attenuation structure of the Erzincan region is studied using the single scattering model of the coda wave generation and coda normalization method for... A Akinci,H Eyido?An - 《Physics of the Earth & Planetar...
Learn about sound waves and their properties including amplitude and frequency. See how sound waves and properties of sound can be represented as a...
1. And the amplitude is controlled by this method. Thirdly, this paper adopted the digital phase lock technique based on asynchronous varying-Frequency modulation algorithm to control the phase and frequency of the refrence current, and the power factor of the grid-connected inverter. ...
i. The amplitude of a wave is the maximum displacement, or the maximum value, it attains from its mean position during a cycle. It is both positive and negative. With sound waves, the greater the amplitude, the louder is the sound. ...
reinforcing thevibrationat the resonant frequency of the tube. The time required to set up this steady-state oscillation is called thetransient time of the instrument. Thehuman earis extremely sensitive totransientsin musical tones, and such transients are crucial to the identification of various musi...
() State the amplitude of the wave amplitude=[1】(Il) Determine the frequency of the wave frequency=[2](i) Determine the speed of the wave speed=2](c) Fig. 12 4 shows a device that is used to measure the depth of the se a beneath a ship Sound waves are given out by the ...