The principle is that when a high voltage (10 ~ 15 kV) is connected to the electrodes at the two ends of the tube, a small number of free electrons in the tube will move to the anode under the action of the high voltage, and hit the inert gas molecules while accelerating, so that the gas in the tube will ionize rapidly and become a plasma state, and at the same time, the ions will form a current through the whole tube under the acceleration of the electric field.
These ions constantly collide (ionize) and recombine, and they will emit various colors of glow corresponding to the specific atomic energy level transition. Therefore, this kind of discharge is also called "glow discharge".
Extended data
"Colorful lights can also be healthy" nutrients "in home life." Zhang Longming, secretary general of the Decoration Design Committee of Shanghai Decoration Industry Association, pointed out that it is best to master the following color wisdom when decorating a room.
1, orange restaurant and kitchen: can increase appetite.
It is best to use orange as the main color in kitchens and restaurants, which will not only enhance the atmosphere and give people a warm and pleasant feeling, but also make the food look fresh and attractive and increase appetite.
2, blue bedroom: the warmest.
A British study found that being in a blue environment helps to calm emotions, relieve breathing, relax muscles, reduce tension and anxiety, and relieve physical and mental stress. In addition, another British study shows that people can sleep for 7 hours and 52 minutes in a blue bedroom, which is significantly higher than that in purple, gray, red, gold and brown bedrooms.
3. Light green office: improve efficiency.
Nowadays, offices are generally large, and employees sit together to work, sometimes it seems noisy and crowded. If the office color is light green, it can reduce people's irritability, make people feel bloated and make the office more prominent.
People's Network-Colorful is also healthy? Eating beauty and color is good for your health.