||If you live in Manitoba
or have visited Winnipeg you will likely know that Polo
Park is a large mall located on the strip, Portage
one time, many years ago, there was a rather large
sundial which stood outside the entrance of the mall.
This sundial was removed in the '60's when the mall
underwent major renovations. Nobody seems to know where
it went but as it was constructed of concrete it is
likely to have been demolished.
are a couple of photographs of the sundial courtesy of
John Walker from Pinawa.
is an example of an equatorial dial. It is the simplest
form of dial and is the one used to layout the hour lines
of most other dials when the graphical method of sundial
design is used.
||This close up
shows the layout of the hour lines. They are
equally spaced apart at 15 degrees. The gnomon,
in this case the large concrete pillar is set to
point at the North Celestial Pole. It is placed
so the angle between the top surface of the
gnomon and the horizontal plane of the ground is
equal to the latitude of the place where the
sundial is positioned. In this case it is
This dial will
indicate the local time from sunrise to sunset.