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5 Things You Didn’t Know the Purpose of


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Copper handles

have you noticed that most doorknobs are made of brass? there is a logical explanation for this the thing is that copper-based alloys especially brass prevent the spreading of germs perhaps this is not so important if you live alone in an apartment where the doors are always open and you don’t really need to touch the handles however when it comes to an office or Hospital, for example, a doorknob can become the breeding ground for dangerous bacteria by the way the amazing properties of copper were known to our ancestors in ancient times back then vessels made from this material were used to purify drinking water, in addition, this chemical element was used in the production of antibacterial drugs before the invention of antibiotics.

How exactly brass protects from germs is still not fully clear a recent study by British scientists suggested that the secret could lie in the interaction of this material with human sweat when he touched the handle with a slightly sweaty palm the salt produced by the human body starts the corrosion process 3in copper, this process hampers the activity of microorganisms, so according to scientists copper doorknobs can neutralize a huge number of pathogenic organisms but you should not rely on them only don’t forget about basic hygiene routines like washing your hands before eating.

Microwave mesh

have you noticed that there’s a fine metal mesh inside any microwave? the one that always makes it difficult to see what’s inside this is not a meaningless design feature as many people might think in fact the metal mesh is there to stop microwaves from escaping this mesh has a peculiar predecessor called the Faraday cage this is a device invented in 1836 by the English physicist and chemist Michael Faraday it usually looks like a grounded cage made of a very conductive material.


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