Recent content by Tomboland

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    Force on a sphere in a constant external electric field

    This is the exact question i was looking for help with and still not sure of what the next step is. I know the uniform E-field causes the sphere to gain an induced dipole. From this how do you get the force? Is it ok to just assume the E-field remains uniform.. this can't be right as there...
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    Graduate How do you work out the largest angular scale to which it is sensitive

    bump or what ever I still not sure about this So you have 2 telescopes a distance B apart looking at an area of sky at an angle theta. Then place a source at a small angle away from theta, alpha. Then I can show, using small angle approx for alpha the corolated output of the system is...
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    How can I solve this integration problem using substitution?

    http://integrals.wolfram.com/index.jsp?expr=(e^x-1)^-0.5&random=false Integrals are hard
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    Schools University of Manchester or Bath

    I would say Manchester just because of the city. Depends what you are into but it is a big city and i am sure there is something for everyone. In terms of the department i would say Manchester has the edge, it is 3 years since I made my choice and I was doing physics rather than engineering...
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    Graduate How do you work out the largest angular scale to which it is sensitive

    How do you work out the largest angular scale to which it is sensitive and the field-of-view and what frequency range it can be used?
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    Graduate Sunyaev Zel'dovich effect - redshift independence

    Sorry to steal your thread but a question on a similar point. If the SZE is independent of redshift how is the distacnce to each cluster worked out when mapping the sky? If it is close by standard methods fine, but I thought one of the good thing about the SZE was the ability to detect...