Quote:
Originally Posted by BassoonBloke
Hello People,
I have one of these magnifiers at home which has'nt leaked (yet !), but the oil has gone slightly yellow (it's probably been in a window or something for a while in it's past). My one does'nt have a filler hole of any sort, so hopefully it won't leak.:
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Thanks for that, everybody. Re. yellowing, both mine are yellowish, but I thought it must be the plastic that had discoloured, not the fluid. I'll draw some out and see if I can tell.
I suppose the magnifying effect is due to the refractive index of the fluid, not the shape of the container. Would glycerol have a similar index to liquid paraffin? Or doesn't it matter much?
Dave