Spread spectrum. In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.
Lipids are one of the four major groups of organic molecules; the other three being proteins, nucleic acids (DNA), and carbohydrates (sugars). Lipids are made up of the same elements as carbohydrates: carbon, hydrogen, and oxygen.
Lipids are mostly made up of Carbon and Hydrogen atoms. They also contain some Oxygen atoms. Lipids are formed when glycerol molecules combine with fatty acids(compounds). Each Lipid has a different structure even if the difference is very small. They belong in 3 different categories: fats, oils, and waxes. Lipids can be saturated or unsaturated. Saturated is fatty acids in the state of having the highest number possible of hydrogen atoms. If there is one or more carbon-carbon double bonds in the fatty acid, then it is unsaturated.