Recent content by theorem

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    STD of Poisson distributed particle intensity

    Homework Statement Say I have a detector that detects alpha-particles of some decay process. Let N be the amount of particles detected and let N be Poisson distributed. If I now define the intensity to be the amount of detected particles per second I = N/t, what would the standard deviation of...
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    Fourier Series for f(x) = sin(3x/2) and Evaluating Series for (1/(4n^2-9))^2

    Oh yes, my mistake. I meant cos(pi n) not cos(xn).
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    Fourier Series for f(x) = sin(3x/2) and Evaluating Series for (1/(4n^2-9))^2

    Homework Statement Evaluate following series: \sum_{n=1}^\infty \frac{1}{(4n^2-9)^2} by finding the Fourier series for the 2\pi-periodic function f(x) = \begin{cases} sin(3x/2) & 0<x<\pi \\ 0 & otherwise \end{cases} Homework Equations a_n = \frac{1}{\pi}\int_{-\pi}^{\pi}...
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    Graduate Metalworking and magnetization

    I heard/read somewhere some time ago during my electromagnetism course that when rolling a piece of metal into a metal plate, the magnetization properties will vary depending on how you apply the outer magnetic field. For instance if you apply a magnetic field perpendicular to the "direction"...