Observe sunspots by going to Grand Central Terminal?

The southern wall of the Grand Concourse, facing 42nd Street, has semicircular grills high up, with small curlicued spaces like those in a leafy tree. Many of those spaces act like the aperture of a pinhole camera, reflecting an image of the sun that, when it reaches the floor, will be 8 to 12 inches wide. The smaller grill spaces will produce dimmer but sharper solar images on your paper.

(via 92y blog)

This entry was published on July 02, 2008 at 10:42 am.

Tags for this entry:  astronomy  nyc  sun  grandcentral 

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