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Last Updated on May 7, 2025 by Muhamed Elmesery One of the most famous and revolutionary scientific theories of the 20th century is Einstein’s theory of relativity. It was proposed by the German-born physicist, Albert Einstein, in 1905 and has since then been accepted as a fundamental theory of physics. This theory has brought about a radical transformation in the …

Last Updated on May 7, 2025 by Muhamed Elmesery Have you ever thought about how we can get fresh water from sea water? Or how can we get the skim milk? Or how is blood separated into its four components in hospitals and blood banks? Sand and water/ Cereal and milk/ Sugar and salt/ Salt and water/ Water and ethanol/ …

Last Updated on May 15, 2025 by Muhamed Elmesery Have you ever dreamed of defying gravity? That dream can now become a reality with the free-fall experiment. This experiment is a great way to learn about the principles of gravity, acceleration, and the conservation of energy. It is also a really fun and interactive way to explore one of the …

Last Updated on April 18, 2025 by Muhamed Elmesery To understand and study the world of microorganisms, we need special techniques or methods that are called “Microbiology techniques”.  Microbiology techniques are the methods used for studying microbes (ex: bacteria, fungi and protest). The purpose of these techniques include microbial identification, staining, engineering, survey, culturing and manipulation. What are Microbiological Techniques? …

Last Updated on May 15, 2025 by Muhamed Elmesery Acids and Bases play a vital role in our life and all of the environment around us. When you brush your teeth with toothpaste or wash your hands with soap or take your coffee, you’ve already experienced acids and bases. In chemistry, substances are classified as acids or bases or neutral, …