24 Jan
2008
24 Jan
'08
7:56 p.m.
On 1/25/08, Gareth McCaughan <gareth.mccaughan@pobox.com> wrote:
I don't understand what the problem is. It's negative; the sheet is a three-dimensional object, even though one dimension is rather small, and you've reflected it across that small dimension. What's conundral about this? I'm obviously missing a subtlety...
Idealised, the sheet (together with its inscription) is a plane --- and so is the mirror. In real life, of course, an experimenter would have to separate them slightly to observe what's happening, if his imagination is unequal to the task of mental recreation. By the way, that inscription got a bit too clever for its own good: to avoid further cnfusion, maybe it should just have read "Happy New Year", or some such ... WFL