It surrounds us during our entire lives, and we breathe it in and out from our first to our last moment. Without it, there would be no life on our planet. We are talking about one of the four elements, air. The air combines gases that make up the earth’s atmosphere. Dry air is mainly composed of two gases: Nitrogen (N2) is the primary air component at 78.08 percent. At 20.92 percent, oxygen (O2) is the second most crucial component.
Furthermore, air contains noble gases (0.93 percent in total), mainly argon, as well as helium, neon, krypton and xenon. In addition, carbon dioxide (CO2) makes up 0.037 percent, and is one of the main air components due to its importance for living organisms and the climate. The air also includes methane, hydrogen, nitrous oxide (laughing gas) and carbon monoxide. In this article of Gazettely, we will tell you nine interesting things about the air that you probably don’t know.
Invented at the start of the 19th century in England, the pneumatic mail used a circuit of tubes and a compressed air system to deliver telegraphic messages inside capsules. It became widespread in various parts of the world but gradually fell into disuse. And yet it still has several applications today: for example, in malls, for sending cash into safes, or in drugstores, to move drug packages from the warehouse to the counter. Technology is based on compressors, turbo wheels and diverters capable of moving objects weighing a few kilograms at over 15 m/s (54 km/h) for hundreds of meters.