Neatorama Posts Tagged "sundials"
17th Century Pocket Watch...

(Photos: Columbia University)This unusual antique is called a diptych dial—a type of sundial. Skilled craftsmen produced them from the Sixteenth through the Eighteenth Centuries, usually in Nuremberg. They were use...

http://www.neatorama.com/2013/10/09/17th-Century-Pocket-Watch/
A Digital Sundial...

Amazing! This sundial is digital in that it shows...  ...t time using digits. In the true tradition of all sundials , the device is purely passive - it operates witho...

http://www.neatorama.com/2013/09/04/A-Digital-Sundial/
Sundial Alarm Clock Goes off with a Bang...

This unusual clock is a solar cannon. It's a sundial that fires a tiny cannon when the heat of sunlight, concentrated wih a lens, detonates gunpowder. In a 1903 treatise on solar energy, Charles Henry Pope wrote:In the i...

http://www.neatorama.com/2012/11/28/Sundial-Alarm-Clock-Goes-off-with-a-Bang/
Indoor Sundial...

How does Tom Egan's sundial work? It reflects light inside without distorting its original direction:a novel indoor sundial using an externally mounted convex mirror to compress the entire visual arc of the sky down to t...

http://www.neatorama.com/2012/10/31/Indoor-Sundial/
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