Rebecca Schroeder is an American inventor and one of the youngest females to be granted a U.S. patent. When Becky was 10 years old she thought of using a backing sheet of paper with phosphorescent lines that could be placed under writing paper that would allow her to write even with no other light available. She was granted U.S. patent 3,832,556 on August 27, 1974, when she was 12 years old. The formal title of her invention is "luminescent backing sheet for writing in the dark," or "Glow Sheet". NASA showed an interest in the invention, since they were working on a similar idea at the time.