Quote:
Originally Posted by tnott
The problem is that when you double the length of components you get 8 times the flexure - and that's without any increase in weight, which is proportional to the cube of the aperture. In other words, if you double the aperture of a scope (without changing the design) you can end up with 8 times the weight combined with 1/8 the rigidity.
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Aah! The wonders of scaling. Linear versus area versus volume. Strength proportional to cross section etc. Hence why an elephant looks proportionately so different to a gazelle. And the impossibility that Gulliver and the inhabitants of Lilliput could look the same.