Recent content by andybham

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    Graduate Parametric equations for geodesics

    Ah I see, the two equations provide the parametric representation of a typical geodesic. Thankyou both for all your help!
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    Graduate Parametric equations for geodesics

    Thankyou for your reply. Why do the resulting equations give all geodesics, including null geodesics, as affine-parameterized curves? because we are optimising s hence finding the shortest path through space-time? I have an example question (and the corresponding solution) for the metric I...
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    Graduate Parametric equations for geodesics

    What are you trying to do when you find parametric equations for a geodesic lines on a surface? Take the metric ds^2 = dq^2 + (sinh(q)*dp)^2 Are you simply trying to get q as a function of s? and p as a function of s? If so, why? Thanks
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    High School Can You Solve This Hilarious Limit Problem Involving Sine and Infinity?

    No, lol! |pig||rat|*sin(x) Hah, sorry, that is terrible!
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    Undergrad Reducing a Complex Equation: Steps and Solutions

    Yes I thought so, thanks!
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    High School Can You Solve This Hilarious Limit Problem Involving Sine and Infinity?

    what do you get if you cross a pig and a rat?
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    Undergrad Reducing a Complex Equation: Steps and Solutions

    Does anyone know the steps involved in reducing ((1+u/c)/(1-u/c))^0.5 - 1 = u/c ?
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    Graduate DT Fusion vs DD Fusion: Pros and Cons of Different Nuclear Reactions

    What are the advantages and disadvantages of dt fusion over dd fusion?
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    Graduate Critical fission energy question

    is this done by calculating the separation energy? E = m(n) + m(A) - m(A+1)
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    Graduate Critical fission energy question

    I have a fission exam next week, can someone help me with this past paper question: If you know the masses of two nuclei (A)Z and (A+1)Z, (say masses are (A) and (A+1)) and you know the 'critical fission energy' of (A+1)Z, how do you determine if (A)Z is fissile? if it is not fissile, at...
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    Undergrad Two (possibly) simple derivations

    Can someone show me how to integrate any (or both) of these two simple equations. I have written down the equation that needs integrating and the final result and attached them as a pdf. Regards, Andy
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    High School Understanding Lenz's Law - Get a Clear Explanation Now

    Lenz's Law states that in a given circuit with an induced EMF caused by a change in a magnetic flux, the induced EMF causes a current to flow in the direction that opposes the change in flux. That is, if a decreasing magnetic flux induces an EMF, the resulting current will oppose a further...
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    Undergrad Solving 3 Equations for w in Matrix Form

    no they are not typos, could I not use T = -2 1 e/c 1 -2 1 d/a 1 -2 or is that just stupid?
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    Undergrad Solving 3 Equations for w in Matrix Form

    Is it possible to put these three equations into a matrix equation w*a = b -2a + e w*b = c -2b + a w*c = d -2c + b of the style w*u = T*u where u is a vector, u = {a, b, c} and T is a matrix. w is just a number.