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2009 High School Physics Photo Contest

Winner's Showcase

 

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Third Place - Natural

Title: Solargraphy
Student: David Abraham Levine
School: Weston High School, Weston, Massachusetts
Teacher: Boris Korsunsky

This image was taken over a 45-day exposure using a paint-can pinhole camera. As the sun moves across the sky, it burns an image into the photopaper placed inside the paint can. Each streak corresponds to a day and the gaps or incomplete streaks are caused by overcast weather that day. This technique is called solargraphy. Over longer exposures it is possible to see how the height of the streak changes in relation to the seasons. The streaks are not perfect arcs because of the warped nature of the photopaper while wrapped up in the paint can. All that is required besides a pin hole camera is black and white photosensitive paper. Oddly, not only is the final exposure in color, but it doesn?t even have to be developed. The negative was scanned, horizontally flipped, the colors inverted, and here it is! The presence of color is due to the degradation of the chemicals in the photopaper.

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