Recent content by geronimo

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    Undergrad Accelerating Expansion Threshhold

    Ah, from your own frame of reference only, possibly so! But I too want to know what this mysterious and possibly arbitrary limit or distance marker is. My intuition tells me there is not one but without such a thing the balloon and raisins in cake analogies have reached their limits. New...
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    Undergrad Effort to get us all on the same page (balloon analogy)

    Those who take Ned Wrights tutorial as gospel will not take kindly to ditching his balloon model, even if some see its limitations. I got short shrift when suggesting a more versatile model/analogy for which I was chastisd for calling a mechanism (though in my book even an expanding balloon...
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    Saltwater voltage source question

    I suggest the led illuminates briefly then goes out, is because while you are drawing no current from your cell the cell electrolyte slowly builds up a good quantity of ions which discharge quickly and briefly. (a bit like discharging a capacitor). From my own home-made cells I have seen short...
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    Undergrad Effort to get us all on the same page (balloon analogy)

    Having ditched the balloon analogy as being too simplistic, I am visualising the mechanism as more like expanding gap-filling foam. This allows me a more realistic three dimensional picture and allows variations in local expansion caused by chaotic quantum anomalies, causing "lumpiness" on...