What is neon? Detailed answer

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What is neon? Detailed answer

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What is neon?

When we walk along the main street of the city at night, we see an abundance of multi-colored light bulbs on shops and advertisements. We think of them as neon lights. But in fact, not all of them operate on the basis of neon gas. Other gases such as helium, argon, krypton and xenon are also used in light bulbs.

Each gas produces a different color of light when it interacts with the incandescent coil of a light bulb. The color of the light also varies with temperature, pressure, and electrical voltage. Neon gives a red-orange color; argon gives a reddish-blue color; helium - white yellow or sometimes purple; krypton - yellow, green or pale purple; xenon - either blue or blue-green.

When electricity passes through neon, the atoms of the gas emit light. The energy of the electric current blows electrons off some neon atoms. When these electrons reattach to neon atoms, energy is released in the form of light.

All the gases we have mentioned belong to the same family called inert gases. They are sometimes referred to as rare gases because there are very few of them in the drive. All these gases are chemically inactive. This means that they do not burn and do not form chemical compounds under normal conditions. The main source of these gases is air (an exception is helium, which is obtained from natural gas).

The gases are mixed in the air with oxygen, nitrogen, carbon dioxide and other substances. To obtain inert gases, air is cooled to very low temperatures and turns into a liquid. Liquid air is launched into tall towers and slowly heated up. Once a certain gas reaches its boiling point, it evaporates and separates from liquid air.

Author: Likum A.

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