The classical example of thermionic emission is the emission of electrons from a hot cathode into a vacuum (also known as thermal electron emission or the Edison effect) in a vacuum tube. The hot cathode can be a metal filament, a coated metal filament, or a separate structure of metal or carbides or borides of transition metals.
Low confidence regions are areas for which there s a small amount of DNA evidence found in your sample. All ethnicities with predicted percentages of less than 4.5% appear as low confidence regions. Inferior complex is low complex .
From low and brow, Americanism, circa 1902. Refers to the (by that time discredited) pseudoscience of phrenology, which suggested that a person of low intelligence and sophistication would possess a lower brow-line than someone of greater intelligence and sophistication. Alternative spelling of lowbrow.