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.
Cholesterol and triglycerides are both lipids, but have very different shapes. Cholesterol is made up of connected rings of carbon atoms and also is called a âsterolâ. Triglycerides are chains of carbons called âfatty acidsâ, attached at one end to a carbon backbone.