from the no-you-see-it-now-you-don't dept.
eldavojohn writes "There's a new antenna that consists of plasma and essentially vanishes when you turn it off. While it may seem to not have many uses in the commercial world, it is very important to military personnel who risk detection or for anybody wishing to avoid signal jamming."
"This is lemma 1.1. We start a new chapter so the numbers all go back to one."
-- Prof. Seager, C&O 351