File:Manually Cryogrinding Black Walnut Shells.jpg

Summary[edit]

Camera location	37° 17′ 46.83″ N, 80° 03′ 23.8″ W	View this and other nearby images on: OpenStreetMap	37.296341; -80.056611

So this picture was from my attempt to manually cryogenically grind black walnut shells in liquid nitrogen to turn them into dust. I was doing this because they are extremely hard and had read about cryogenic grinding (on Wikipedia), so I attempted to cryogrind them to pulverize them into dust. I was conducting bomb calorimetry experiments to ascertain the caloric value of burning waste walnut shells. This was for a final project in a college physical chemistry lab course.

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This file was uploaded as part of Wiki Science Competition 2023.