Coordinate tube

A coordinate tube is a fine beam tube in the simple sense . Here an electron beam from electrodes is fired and shot between two capacitor plates. This beam can only be deflected vertically. The coordinate tube is based on the principles of the Braun tube . It's just much simplified (just one direction of distraction instead of two) and is mostly used to explain the principle to school and university students. The deflection "n" is proportional to the current I and also proportional to the length of the length of the capacitor plates, i.e. Apart from these two factors you don't have to pay attention to anything, so you can say: n = proportionality factor B * I * d B are given in Tesla (T) and have the unit N (Newton) / A (Ampere) * m.