SS2015 : Morwenstow sundial

taken 13 years ago, near to Morwenstow, Cornwall, Great Britain

Morwenstow sundial
Morwenstow sundial
On the gable of the south porch, the dial is showing the local solar time as shortly before 9:30am, which at the longitude of Morwenstow is equivalent to around 10:45 BST. The top of the Norman arch of the doorway - a rarity in Cornwall - can be seen below, and the lamb and flag on the finial above are emblems of the patron saint, John the Baptist.
Sundials
A sundial is a device that tells the time of day by the apparent position of the Sun in the sky. In common designs such as the horizontal sundial, the sun casts a shadow from its style onto a surface marked with lines indicating the hours of the day. The style is the time-telling edge of the gnomon, often a thin rod or a sharp, straight edge. As the sun appears to move across the sky, the shadow-edge aligns with different hour-lines. Those sundials that directly measure the sun's hour-angle by the shadow of an edge must have that edge parallel to the axis of the Earth's rotation to tell the correct time throughout the year. The style's angle from the horizontal will thus equal the sundial's geographical latitude. It is common for inexpensive mass-produced decorative sundials to have incorrect hour angles, which cannot be adjusted to tell correct time.
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SS2015, 41 images   (more nearby )
Photographer
  (find more nearby)
Date Taken
Sunday, 8 October, 2006   (more nearby)
Submitted
Friday, 5 December, 2014
Geographical Context
Religious sites 
Primary Subject of Photo
Sundial 
Subject Location
OSGB36: geotagged! SS 2050 1531 [10m precision]
WGS84: 50:54.5566N 4:33.2749W
Camera Location
OSGB36: geotagged! SS 2049 1529
View Direction
NORTH (about 0 degrees)
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