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Exhibition Label: 'Moonstruck' (14/10/2014 - 1/2/2015) - temporary display about the moon

Time and Tide

For a few days at full moon, the Moon is bright enough to cast shadows. A sundial can therefore be adapted so that time is told by moonlight. The rotating silver disc on the double sundial on the right converts apparent
“moon time” into the solar hours we use. Moondials tend to appear on decorative and multipurpose devices and seem to have been prized as ingenious gadgets rather than objects of everyday use.

Inclining Dial with a Horizontal Sun and Moondial, by Hans Gruber, Nuremberg,
c.1570; inv. 43553

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