>Skip Williams wrote:
>
>When you tilt your camera upwards at a rectangular building, the image
>appears larger at the bottom than the type. Just like the "keystone"
>of an brick or stone arch, the one stone at the peak of the arch that
>completes the curve.
>===================================================================
>That's odd. I thought a keystone in an arch was wider at the top than
>the bottom - otherwise, surely, it would just fall out?
>
>Regards,
>
>=====
>Ray
I certainly is - it might more properly be called a 'lock stone' because
the wedge shape locks the arch in shape under pressure from stones above.
Nothing more satisfying than building a good drystone arch and one day,
I'll get one right!
Andrew
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