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Applications of Vector AnalysisApplications of Vector Analysisand and Fourier SeriesFourier Series and Its and Its
TransformsTransforms
By Chance Harenza
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Vector AnalysisVector AnalysisEngineering, Meteorology ,Electromagnetism, Oceanography , Astrophysics, Geology
V(3D) = ai+bj+ck= [x, y, z]
Vector Field
z]
Curl of Vector Field:"rotation"
Directional Derivative
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MeteorologyMeteorology :: Watching the WindWatching the Wind
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OceanographyOceanography :: Tracking currentsTracking currents
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Satellites tracking java programhttp://science.nasa.gov/Realtime/JTrack/3d/JTrack3D.htmlF12= - G (m1*m2) r G=6.67e-11
(R21)²r is the unit vectorr is the unit vector
Space stations trackedhttp://science.nasa.gov/temp/StationLoc.html
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Geology Geology : : GeophysicsGeophysicsThe Movement of the Plates
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Coriolis Before flipeffect on Magma
During flipDuring flip
Orange is south Blue is north
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Electromagnetics, Wave theory, Electromagnetics, Wave theory, and Quantum mechanicsand Quantum mechanics
The Laplacian
vector of the flow of electrons (which is negative to positive) which is is negative to positive) which is opposite to the flow of current
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Fourier SeriesFourier Series and Its and Its TransformsTransformsThe average value of sin(nx) over a period equals the average value of Cos(ns) over a period which equals one half
Fractional Fourier Transform
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Fractional Fourier TransformsFractional Fourier Transforms
Geophysics: 2 dimensional data of seismic motion :fan-filtersFinding oil resourcesImage recoverySynthesizersSynthesizers
Differential equations:f′(x) = ∑∑ ((--nanannsinnx + nbsinnx + nbnn cosnx)cosnx)
n=1n=1
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Other Other Fourier TransformFourier Transform
Definition of Fourier Transformf(x) = 1/(2) g(t) e^(i tx) dt
Inverse Identity of Fourier Transformg(x) = 1/(2) f(t) e^( -i tx) dtg(x) = 1/(2) f(t) e^( -i tx) dt
Fast Fourier Transform
Discrete fourier transform
discrete <--> discrete
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The future of physicsThe future of physics
Satellites, Microwaves, Radio waves, Satellites, Microwaves, Radio waves, and electrical devicesand electrical devicesElectromagnetic, Electric fields, Electromagnetic, Electric fields, Magnetic fields, currents of FlowMagnetic fields, currents of FlowMagnetic fields, currents of FlowMagnetic fields, currents of Flow
depends on fourier and vector depends on fourier and vector techniquestechniques.
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Good sitesGood sites
http://mathworld.wolfram.com/
http://science.nasa.gov/Realtime/JTrack/3d/JTrack3D.htmlck/3d/JTrack3D.html
http://science.nasa.gov/temp/StationLoc.html
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Fast Fourier TransformFast Fourier Transform
The fast Fourier transform (FFT) is a discrete Fourier transform algorithm which reduces the number of computations needed for points from to , where lg is the base-2 logarithm . If the function to be transformed is not harmonically related to the sampling frequency, the related to the sampling frequency, the response of an FFT looks like a sinc function(although the integrated power is still correct). Aliasing (leakage ) can be reduced by apodization using a tapering function . However, aliasing reduction is at the expense of broadening the spectral response.
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Common Fourier TransformCommon Fourier Transform