🤔 How it works …….. ⁉
How Do Gramophones Work? 📣
The first functioning record player, called a phonograph, was constructed by Thomas Edison in the late 19th century.
Early record players that were driven by mechanical means and reproduced sound without electrical amplification. These record players are quite different from modern turntables, but the records that store the sound and the needles that turn it into audible music work in essentially the same way.
The Gramophone Player
Like other record players, gramophones read the sound with a small needle which fits into the groove in the record. That needle is attached to a diaphragm, which in turn is attached to a horn. … These vibrations are transmitted to the diaphragm, which itself vibrates, creating sound. His first phonograph used grooves etched in tin foil to record his rendition of “Mary Had a Little Lamb”–the first sound recording.
😳Why❓❓❓
Why we get Sweat 😥😰
Sweat is our way of cooling us down. When our body starts to sense that it’s overheating, it starts sweating as a way to control its temperature. “By promoting heat loss through evaporation, sweat helps regulate our body temperature,”
Pure sweat is actually odorless. So why do you smell when you sweat? You may notice the smell mostly comes from our pits (hence why we put deodorant there).
This is because the apocrine glands produce the bacteria that break down our sweat into “scented” fatty acids. pocrine sweatby itself does not have an odor, but when the bacteria that lives on our skin mixes with apocrine secretions, it can produce a foul-smelling odor.
Eccrine glands: produce most of our sweat. These glands are mostly concentrated on the palms, soles, forehead and armpit, but covers entire body.
Emotional sweat , which comes from the apocrine glands, is a bit different. “It does not serve a temperature regulatory function, but rather one to combat an impending challenge. Spicy foods can stimulate our sweat glands. Foods like garlic, onions, or cabbage may worsen body odor
Some people experience yellow stains under the arms of white shirts or on white sheets. This is due to a chemical reaction between your sweat and your antiperspirant or clothes. “Aluminum”.
💁🏻♂️ GK TODAY
NASA🛰️🚀 The National Aeronautics and Space Administration is an independent agency of the United States Federal Government responsible for the civilian space program, as well as aeronautics and space research.
NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics. The agency’s leader, NASA’s administrator, is nominated by the President of the United States.
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Ch Narmada Naveen Kumar |
