Half of the Boeing 787 Dreamliner is made up of composite materials, 82 % of the Eurofighter Typhoon consists of them, and some unmanned aerial vehicles are made of nothing else. Composite materials are not only in the sky, though — they can even be found in your home. What kind of materials are they, you ask?
Legend has it that the Aztec emperor Montezuma II would consume dozens of goblets of hot cocoa at celebrations, and the rest of the world loves the delicacy so much that it even celebrates it with international holidays several times a year. Milk, dark, white, liquid… all of it is chocolate in some form or another.
Every day, more than 6.5 lbs of these substances are produced per inhabitant of the Earth. No, we’re not talking about food products. We mean compounds that reduce the surface tension of liquids.