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 .
Know that Complete DNA tests will tell you ethnic breakdown. By looking at all of your DNA, it can give you a rough percentage of your ancestry by country or region. Know that there are inaccuracies in the tests. There are some things the tests cannot tell very well, because the DNA is similar between some countries.