Re: Arch Forms for Oven Door - The Calculation? Just out of interest I calculated and plotted the 3 arches (circular, parabolic and simple catenary) for a specific height/width ratio of the opening of 1/2 and the plot is attached.
Interestingly, for this particular ratio, the catenary is very close to the parabolic one. Presumably meaning that not only do you get the focal effect, but also the strength of the catenary for pretty much the same arch .... not that it matters with the door.
Oh, dear, do I have too much time? No!
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