Rayleigh Definition and 108 Threads

  1. B

    What do Rayleigh and Nusselt numbers tell us about heat transfer?

    Hi Can anyone tell me anything about these numbers. I know the formulae I just want a qualitative description. As far as I have it the Rayleigh number tells you if you can have convection and how vigorous that convection is, and the Nusselt number tells you how efficient that convection...
  2. N

    Rayleigh Refractometer index of refraction

    When constructing a Rayleigh Refractometer the formula for the refractive index of a gas at pressure P and temperature T is: mu(P,T) - 1 = (gamma) P/T where, mu(P,T) = refractive index as a function of pressure and temperature and gamma = [n(lambda)Ta]/[L(deltaP)] where, n = fringe...
  3. N

    Rayleigh Refractometer index of refraction

    When constructing a Rayleigh Refractometer the formula for the refractive index of a gas at pressure P and temperature T is: mu(P,T) - 1 = (gamma) P/T where, mu(P,T) = refractive index as a function of pressure and temperature and gamma = [n(lambda)Ta]/[L(deltaP)] where, n = fringe...
  4. U

    Why does Planck's constant not appear in the Rayleigh-Jeans formula?

    I am to derive the incorrect Rayleigh-Jeans formula from the correct Planck formula to show why plank's constant does not appear in the Rayleigh-Jeans formula. I should also recall the Stefen-Boltmann Law here's what I have but I'm stuck... Rayleigh-Jeans formula: u(\lambda)=\frac{8 \pi k...
  5. T

    Find the Principal Eigenvalue of Sturm-Liouville Problem with Rayleigh Quotient

    Use the Rayleight quotient to find a good approximation for the principal eigenvalue of the Sturm-Liouville problem. u'' + (\lambda - x^2)u = 0 0 < x < 0 u(0) = u'(1) = 0 Any help?
  6. J

    How Can Rayleigh's Method Determine Beam Oscillation Frequency?

    A simply supported beam of negligible mass , length l and stiffness EI carries a concentrated mass m at its centre. Apply Rayleigh' s method to find the beams frequency of small oscillations. Isn' t it just give byt this with rowe replaced by m?
  7. E

    Help about Rayleigh Dissipative Function

    i think I've posted this topic in the wrong thread(theoretical physics).. anyways, i would like to ask, if anyone could give me some backgrounds on Rayleigh Dissipative Function.. thank you very much in advance..
  8. E

    Understanding the Rayleigh Dissipative Function in Classical Mechanics

    Physics people, what is the theory behind the Rayleigh Dissipative Function? could you kindly give me some website which could help me understand this?
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