The Faraday-disc dynamo has been put forward as a model to explain the variation with time of the earth's magnetic field. Evolutionists, especially have claimed that this model explains the reversals of the field, which are believed to have occurred in the past;l and that th emodel is consistent with the evolutionary doctrine. In this article the model is investigated in detail. The conclusion is that the magnetic field generated by the Faraday-disc dynamo never reverses; rather it decays exponentially. This exponential decay of the earth's field is a feature of the theory of geomagnetism proposed by Barnes. That theory offers one of the strongest proofs of a recent Creation. Thus the evolutionists' model is actually evidence, not for uniformitarianism, but rather for recent Creation.