Posts Tagged ‘prism’

How the Government Tracks You: NSA Surveillance

Thursday, October 17th, 2013

Entertaining little documentary on the NSA, narrated by Evangeline Lilly. “How the Government Tracks You: NSA Surveillance.”

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Stalactite ceilings: the 60s, the 12th century

Sunday, July 19th, 2009

While looking for photos of 60s/70s stalactite and fantasy cave ceilings, I unexpectedly discovered that sculptural geometric and prism ceilings first appeared in the 12th century in Persia – probably due to increased skill with locally available gypsum plaster – and spread throughout the Islamic world and then beyond.

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