Two or more pure substances can be mixed together to form a mixture. An example of a mixture of two compounds is alcohol and water. An example of a mixture of elements and compounds is air. The major components of air are hydrogen, oxygen, nitrogen and carbon dioxide. The substances in a mixture can be separated physically via such methods as filtration or chromatography.
Enigma is a German musical project founded in 1990 by Romanian-German musician and producer Michael Cretu. Cretu had released several solo records, collaborated with various artists, and produced albums for his then wife, German pop singer Sandra, before he conceived the idea of a New Age, Worldbeat project.
The Enigma machine was an advanced electro-mechanical cipher machine developed in Germany after World War 1. The Enigma machine was used by all branches of the German military as their main device for secure wireless communications until the end of World War 2.Several types of the Enigma machine were developed before and during World War 2, each more complex and harder to code break than its predecessors.The most complex Enigma type was used by the German Navy.everal types of the Enigma machine were developed before and during World War 2, each more complex and harder to code break than its predecessors. The most complex Enigma type was used by the German Navy.