Why does the BMW logo show an airplane propeller? Detailed answer

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Why does the BMW logo show an airplane propeller? Detailed answer

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Why does the BMW logo show an airplane propeller?

The BMW logo is inherited from its "parent" company Rapp Motorenwerke, and the circle segments were painted white and blue because these colors are symbolic of Bavaria, where the production is located. Later, BMW marketers came up with a legend that the logo depicts a stylized white propeller of an airplane cutting through the blue sky. The fact is that initially BMW was created for the production of aircraft engines and only 10 years later it began producing cars.

Authors: Jimmy Wales, Larry Sanger

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Where would you go for a good sip of ozone?

Don't bother going to the coast. The cult of healthy sea air, so popular in the XNUMXth century, was based on an elementary misunderstanding. The invigorating, salty taste has nothing to do with ozone, an unstable and very dangerous gas.

Ozone was discovered in 1840 by the German chemist Christian Schönbein. Investigating the peculiar smell that arose near the working electrical equipment, the scientist discovered a hitherto unknown gas O3 and named it after the Greek ozein ("smell").

Ozone, or "heavy air", has won great favor among medical scientists, who still cannot free themselves from the grip of the "miasmatic" theory of disease. The essence of this theory lies in the fact that the deterioration of human health allegedly arises from bad smells. Ozone, as it was believed, is exactly what is needed to cleanse the lungs of harmful "stench", and the sea coast is just the place where you can get it in abundance.

Over time, an entire industry has grown up around "ozone treatment" and "ozone hotels" (in Australia you can still find hotels with a similar name). Up until 1939 the seaside resort of Blackpool boasted "the healthiest ozone in Britain".

Today we know that the sea coast does not smell of ozone - it smells of rotten algae. There is no evidence that such a smell is good for health or, conversely, harmful (after all, the main component in its composition is sulfur). Perhaps it just evokes positive associations in the human brain, evoking memories of the happy days of childhood holidays.

As for ozone, the gases from your car's tailpipe (combined with sunlight) create far more ozone than anything found on a beach. And if you really feel the urge to fill your lungs with ozone, the best thing is to suck on the exhaust pipe. Which we personally do not recommend doing. Not only will you cause irreparable damage to your lungs, but you will also burn your lips badly.

Ozone is used to make bleach and to kill bacteria in drinking water as a less toxic alternative to bleach. Among other things, it is produced by high-voltage electrical equipment such as televisions and copiers.

Ozone is also emitted by some trees - for example, oak or willow - which can poison the surrounding vegetation.

The gradually depleting ozone layer that protects our planet from harmful ultraviolet radiation would inevitably cause death if inhaled. The ozone layer is located 24 km from the surface of our planet and smells vaguely reminiscent of geraniums.

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