Recent content by benbenny

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    How many rectangles fit in a triangle?

    Ok, so here is one way to do it that gets rid of the straddling assumption. But it does not get rid of the same orientation assumption. If the triangle sides are a,b,c. The number of rectangles that can fit would be \Sigma_{n=1} \downarrow\frac{d_{n}}{R_{2}} where d_n = a - (...
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    How many rectangles fit in a triangle?

    What do you mean by "straddle t2"? Thanks for the input!
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    How many rectangles fit in a triangle?

    Ive come up with this so far. It only allows to fit the rectangles in portrait or landscape mode, not a combination of both, nor diagonally. Any triangle can be made into two right triangles (I think). A given right triangle has bases t1,t2, and hypotenuse t3. The number of rectangles...
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    How many rectangles fit in a triangle?

    Does anyone know how one could calculate the maximum number of whole rectangles that can fit into a triangle. Say you know the length of the sides of the triangle (t1,t2,t3) and the of the sides of the rectangle (r1,r2). Thanks.
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    Finding Location Data from Private Google Calendar XML Feeds

    Hello, Using Yahoo Pipes it is possible to quite easily extract the location data from the XML feed of a public Google calendar and GeoTag it on to a map automatically (see http://pipes.yahoo.com/pipes/pipe.info?_id=d696db6de1dda5c86fc8fa59bbef6aec ) I am trying to create a version of...
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    Parity of Quarks and Electrons

    hmmmm I read about the Wu experiment with the cobalt 60 carbon molecule decaying and emitting an electrons in the opposite direction of its spin. I don't understand why this is evidence for parity violations. It seems that if you mirror this experiment you will get the same image in the mirror...
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    Parity of Quarks and Electrons

    And this is basically determined by experiment for different particles? Thanks.
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    Parity of Quarks and Electrons

    Im trying to understand parity in the Standard Model. Ive read that quarks have positive parity. However I thought that the reason electrons have negative parity is because of the a symmetry of their wave functions, and this is what defines them as fermions. Quarks are fermions as well as I...
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    Momentum conservation under a Gauge Parametrization in string theory

    Second attempt here to get an answer, I am really lost on this. Im reading "A first course in String Theory" by Zwiebach and it says that when applying a general \tau gauge parametrization in the form of n_\mu X^\mu = \lambda \tau we can take the vector n_\mu so that for open strings...
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    Equation of motion of open string with Dirchlet b.c

    Ok. Just thought that since its undergrad level question...but ill ask a moderator. thanks
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    T-duality symmetries, how to count them?

    Im reading about T-duality in string theory and I am trying to understand: in a D dimensional, toroidally, compactified space, is there a symmetry for every compact dimension with itself and with every other compact dimension as well? So, I know that T-Duality implies symmetry under R^i...
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    Equation of motion of open string with Dirchlet b.c

    Anyone know why I am getting no answer for this one? Should I post it in the beyond the standard model forum? Cheers.
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    Equation of motion of open string with Dirchlet b.c

    Fashioned after the derivation of the equation of motion for a string with Neumann b.c in Zwiebach's a first course of string theory, I have derived the very similar equation using Dirchlet b.c. My result, in natural units, is X^{\mu}(\tau,\sigma)=X_{0}^{\mu}-2\alpha' p^{\mu}\sigma +\sum_{n\ne...
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    Rigidly rotating relativistic string

    would be nice to have an answer to this question...I would be very interested to see how alpha prime is derived.
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