Ready-Updates 4U

Refrigerators are a common house hold equipment. Do you know how it works? Here I am trying to present the working of a refrigerator in simple words. The Refrigeration Cycle Refrigerators use a continuous cycle to keep your food cold. This cycle involves a special fluid called refrigerant that changes between a liquid and a gas state. Here is the basic process: Evaporation : The refrigerant starts as a low-pressure liquid in the evaporator coils inside the refrigerator. As it absorbs heat from the food and the surrounding air, it evaporates into a low-pressure gas. This cooling effect is what keeps your food cold. Compression : The low-pressure refrigerant gas is then compressed by the compressor. This increases the pressure and temperature of the gas. Condensation : The high-pressure, hot gas flows through the condenser coils, usually located on the back or sides of the refrigerator. Here, the heat is released into the surrounding air, and the gas cools down and condenses back into a ...

 What is Plastic? Plastic is a synthetic or semi-synthetic material made up of organic polymers of high molecular mass. It is known for its versatility, durability, and low cost, making it a ubiquitous material in modern life. Invention of Plastic The invention of plastic is a bit of a complex story with multiple key figures: Alexander Parkes: In 1862, Parks created Parkesine , considered  the first man-made plastic. It was derived from organic cellulose and could be molded into various shapes. John Wesley Hyatt: In   1868, Hyatt developed Celluloid , a modification of Parkesine. Celluloid became popular for its use in photographic film and as a substitute for ivory.. Leo Baekeland: In 1907, Baekeland invented Bakelite , the first fully synthetic plastic. It was made from combining phenol and formaldehyde and was highly heat resistant and moldable. Bakelite revolutionized the plastic industry. So, while Parkes is often credited with the first man-made plastic, Bakeland'...

 A Newspaper is a printed publication containing news and information. It typically includes articles on current events, politics, business, sports, culture, and opinion pieces. Newspapers have been a primary source of information for centuries, playing a crucial role in shaping public opinion and informing citizens about the world around them. Despite these challenges, newspapers continue to play an important role in society by providing in-depth reporting, investigative journalism and a diverse range of perspectives. The   Relation aller Fürnemmen und gedenckwürdigen Historien  (Account of all Distinguished and Commemorable News), published in Strasbourg, Germany, in 1605, is generally considered as the world's first newspaper. It was printed by Johann Carlous and marked a significant step in the evolution of news dissemination. The Yomiuri Shimbun from Japan is the most circulated newspaper in the world. The first newspaper in India was Hickey's Bengal Gazette, al...