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Grains of Sand

| Wed, May 29, 2019, 12:54 AM



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sand1
The sand under the foldscope was rock-like and black.

The sample was obtained from Huntington Beach on May 25, 2019 at 12:30 pm. The grains of sand under the foldscope showed many rock-looking black shapes. #caltechbi1



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Type of Sample
unknown
Foldscope Lens Magnification
140x

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