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 .
Or, people with Eurasian ancestry can get false readings as Native American depending on how the DNA tests are calibrated. This is due to the fact that some sequences are shared across different populations. While Y-DNA and mtDNA tests are very accurate, autosomal testing requires a certain algorithm. DNA testing companies do not highlight this aspect of the testing and focus on their accuracy. But, this is due to the fact that they are in business to make money. They are pressured to provide so-called definitive answers.