Singapore News - While playing with polarised sunglasses, Abbie Milner, 10, noticed she could see through two sunglasses stacked on top of one another, but when she turned one of them perpendicular to the other, the stacked lenses darkened completely. After researching polarised light, the. Read more at www.tnp.sg
fact, many aircraft parts are specific and have numbers specific to that plane. pieces and parts of aircraft are all manufactured specifically for the aircraft. for example, seats and parts on the aircraft you wouldn t find on a ship. and many of the parts, in fact, most of the parts on the airplane have to be specifically approved by the federal aviation administration for use on that aircraft. so you wouldn t find them in other applications, typically. okay. all right. cnn aviation analyst mary shi schia schiavo. we ll see you next hour. for weeks we ve been talked about the so-called black box, too. and why it could help solve the mystery of flight 370. but this black box might be a mystery isn t itself, as victor found out. yeah. and there are actually two of them. have you ever wondered where the black boxes are? why they re called the black boxes if they re actually