Recent content by Funtime

  1. F

    Temperature dependence of LED emission bandwidth

    Homework Statement If an LED is used in an optical communications system, explain what would happen to the temporal spread caused by material dispersion in the fibre as the LED is cooledHomework Equations (having trouble using the latex equation editor, sorry) I know that the temporal...
  2. F

    Hypothetical 'black hole'/electron atom

    I always end up doing that! It's the 'levels' aspect of it that threw me. Got a reasonable value out of it now, thanks Dick
  3. F

    Hypothetical 'black hole'/electron atom

    Homework Statement I have been asked to consider an atom formed between an electron and 'black hole' i.e. a point singularity with mass and no charge. I should find the mass of the black hole Mh such that the energy levels of this atom would be identical to the energy levels of a hydrogen atom...
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