Re: How did we know what time it was?!

"Jack Denver" <nunuvyer@xxxxxxxxxxxx> wrote in message
news:fOSdneiEKLQvnlPfRVn-hQ@xxxxxxxxxxxxxx
> I don't see how a paper sundial would be of any use in setting a clock to
> anything near the correct time.

I would think it is quite possible. I was plesantly surprised that a
crudely made paper sundial could display the local time quite closely as
shown here.
http://leewm.freeshell.org/origami/sgp-sundial2.jpg
I swear that I did not cheat by calibrating the paper sundial with my watch
but just used a compass to set the direction.

If the equation of time correction is included, it'll be even more accurate:
http://leewm.freeshell.org/origami/eqsd.jpg

Rgds
weemeng


.

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