CHAPTER 1 Graphs are used to study the relationship between 2 things so you can see what the relationship is. Unrelated: 2 items that are not associated. Ex. Hair color is unrelated to shoe size Directly related/proportional: 2 items that are associated such that when one item increases‚ the other increases. The graph of 2 directly related items extends from lower left to upper right. Ex. Clothing size is directly related to one’s weight. Related/ proportional: Is a relationship but can’t
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Windows The Fast Fourier Transform (FFT) is the Fourier Transform of a block of time data points. It represents the frequency composition of the time signal. Figure 2 shows a 10 Hz sine waveform (top) and the FFT of the sine waveform (bottom). A sine wave is composed of one pure tone indicated by the single discrete peak in the FFT with height of 1.0 at 10 Hz. Introduction FFT based measurements are subject to errors from an effect known as leakage. This effect occurs when the FFT is computed from
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wavelength? Wavelength of a sinusoidal wave is the distance between identical points in the adjacent cycles of a waveform signal. Wavelength is commonly designated by the Greek letter lambda (λ)Wavelength is inversely correlated to frequency (figure 1.1)‚ therefore the higher the frequency of the signal‚ the shorter the wavelength. vp Is the phase velocity f is the frequency vp Is the phase velocity f is the frequency λ=vpf Figure 1.1 What is a wave guide? Figure 1.2 A waveguide is
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form‚ FM digital synthesis consists of two sine waves. One is called the modulating wave and the other is called the carrier wave. The carrier wave is the only waveform that is audible. The modulating wave does just as it sounds‚ it modulates the amplitude of the carrier wave‚ and acts as a control value. The frequency of the modulating frequency controls the rate of change in the carrier wave; it controls how fast the modulation occurs in the carrier wave. And the amplitude of the modulating frequency
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I feel so nostalgic a lot of the time‚ watching the waves crashing into shore‚ people paddling out to hit the crests. I remember the feel of the water‚ the road of the wave‚ and the zen like moment when you hit that perfect pipe‚ and ride it halfway back to shore. I’ve been taking in a lot of the local Californian events lately‚ watching the new breed of surfer make their way out to the waves‚ hitting the spots I used to hit‚ part of me feels good‚ part of me misses it. I still hit the ocean when
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Surfing as a hobby has really taken off in the UK over the past ten years and with the south-west coast of Cornwall now chock a block with kids all hoping to catch a wave the most adventurous have set their sights on beaches further afield. Biarritz had historically been the surfing capital of Europe ever since Californian author and screenwriter Peter Viertel took to the Bay of Biscay on his board during the filming of his adaptation of Ernest Hemingway’s “The Sun Also Rises “in 1957. With the
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Paper Electron diffraction through a graphite film. Mark Raskin Skidmore College (11/14/14) Abstract: In this paper‚ the wave-like properties of electrons are discussed. We are trying to measure the inter-atomic spacing (d) between the graphite atoms‚ which we are accelerating electrons through. As the electrons pass through the graphite‚ an interference pattern emerges on the screen in front of the gun. The interference pattern shows up as a circle within a circle‚ each of which represents
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A NEW REVOLUTIONARY SYSTEM TO DETECT HUMANBEINGS BURIED UNDER EARTHQUAKE RUBBLE USING MICROPROCESSOR OR MICRO COTROLLER [pic] [pic] “Thousands of persons killed as a cause of earthquake”. The above words aren’t the headlines of the newspaper but daily news everyone come across whenever we go through a newspaper or watching over a TV news. A person’s life is precious and meaningful to his loved ones. We‚ as responsible Engineers felt a part of society to bring
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Interference Introduction When two waves of equal intensity combine‚ the intensity of the resulting wave can be anywhere between zero and four times the intensity of the individual waves‚ depending upon the phase difference between them. When they are in phase (the maxima coincide with maxima and the minima coincide with minima)‚ maximum intensity results. When they are exactly out of phase (the maxima of one wave coincide with the minima of the other wave)‚ the result is zero intensity. In
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is the phase shift for the following? a. A sine wave with the maximum amplitude at time zero b. A sine wave with maximum amplitude after 1/4 cycle c. A sine wave with zero amplitude after 3/4 cycle and increasing Solution: a. There is no phase shift at time zero b. (¼) 360 = 90 90 x 2π / 360 = 1.57 rad c. (¾) 360 = 270 270 x 2π / 360 = 4. 7 rad A periodic composite signal with a bandwidth of 2000 Hz is composed of two sine waves. The first one has a frequency of 100 Hz with a
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