Recent content by fatherdaly

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    Mechanism of heating organic matter by radio waves

    Nah, I'm just not very on the ball on mondays.
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    Mechanism of heating organic matter by radio waves

    Thanks! I can't believe I was being such a dunce. For clarification, this heating obviously takes energy from the wave. In doing so will the frequency of the wave be reduced (E=hf)? Thinking at a single photon level for radio waves seems a little silly.
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    Mechanism of heating organic matter by radio waves

    I'm doing a study that involves radio waves passing through organic matter and have come across several sources that state that radio waves may heat organic matter when passing through it (For example: http://www.mobilfunkstudien.org/downloads/peleg_wm_10.5923.j.biophysics.20120201.01.pdf)...
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    Magnetic induction of infinite conducting sheet using Ampere's Law

    Homework Statement http://i.imgur.com/j3uzQ.png" to screenshot of question Homework Equations The "Integral Form" the question refers to is the http://upload.wikimedia.org/math/0/3/1/0311484f33c932135c09ab12ca8d1a29.png" The Attempt at a Solution The hint hasn't really helped me...
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    The Maxwell Speed Distribution in 2D

    Ok so I have the integral of v*exp(-\alphav2) dv between 0 and infinity to normalise. I don't know how a substitution would help because you would still have two functions multiplied by one another. Edit: I think I'm being stupid. I've substituted for alpha*v^2. Hopefully it will work.
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    The Maxwell Speed Distribution in 2D

    Homework Statement It seemed much easier to screencap than to write out. Homework Equations It helps to know that the number of states with speed between u and u+du is 2pi*u du The Attempt at a Solution I've tried quite a few things but every time I get to trying to normalise I either get...
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    What Are the First Five Bragg Scattering Angles for Cu X-ray Analysis?

    Thanks a lot for a fast reply. Yeah I've read up a bit on the allowed hkl values for copper which is FCC structure. I guess I'll play with the numbers until I get something similar to the answer.
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    What Are the First Five Bragg Scattering Angles for Cu X-ray Analysis?

    Homework Statement A thin polycrystalline film of Cu, with lattice parameter of 0.361 nm, is irradiated with X-rays with wavelength of 0.154 nm. Calculate the first 5 bragg scattering angles for which X-rays may be detected.Homework Equations 2dsin(\theta) = n\lambda Bragg condition for...
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