Recent content by Combustible

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    Graduate Understanding Nuclear Fission Yields: U-233, U-235, Pu-239, and Pu-241

    I'm looking for the most common thermal fission products for U-233, U-235, Pu-239 and Pu-241. As far as I understand it there are two quantities of interest, the cumulative fission yield and the independent fission yield. The latter being "number of atoms of a specific nuclide produced...
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    High School Does gravity pull towards a point behind an object or its center of gravity?

    Would it not be possible to use a retarded Newtonian gravitational potential using ρ(t-r/c) instead of ρ(t) as you would in electromagnetism. Obviously it wouldn't be as accurate as GR but surely it would allow the gravitational force to have a finite propagation speed in Newtonian theory.
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    Undergrad Why Can't There Be Gravity in 2 Spatial Dimensions?

    According to GR there can not be a non zero gravitational field in empty space in two or three dimensions. For a gravitational field in a region it is necessary that space is curved. But in 2 or 3 dimensions it is not possible for the Einstein field equations to be satisfied in a vacuum and...
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    Undergrad Rotational degrees of freedom I don't get it.

    In Quantum Mechanics, it is not possible for a rotational mode to have any amount of energy, it must be in one of the energy levels of the system. If you simply model a diatomic molecule as a rigid rotor, the rotational energy levels are proportional to 1/I where I is the moment of inertia...