PROCEDURE: 1. Place a piece of plastic wrap on the top of a glass bowl and straighten as best as possible. Wrap a rubber band around the plastic wrap to hold it in place. Gently pull on the plastic wrap under the rubber band to make a very tight fit onto the bowl. 2. Crumble up a few small pieces of tissue paper and set them onto the plastic wrap, as shown in the figure below.
Answers & Comments
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