Questions and Answers of Modern Science.
All elements are made up of tiny invisible particles called atoms. According to the scientists, at the centre of an atom there is a core called the nucleus around which the electrons revolve in different orbits. The nucleus is made up of two types of particles called protons and neutrons…. [… More info ..]
Holograms are amazing pictures that appear to have depth just like the real object. For example, if you look at a hologram of the front of a cube and then move to one side, you will see the sides of the cube just as if you were walking around it. Holograms are made with lasers….. [… More info ..]
Cement, today, is by far the most useful of all the building materials. It is being used in all countries throughout the world as a binding material in the construction of buildings and civil engineering. It is a grey colored powder… [… More info ..]
An alloy is an intimate mixture of two or more substances, at least one of which is a metal. The mixture is usually more useful than each ingredient on its own. Almost all alloys are made by mixing constituent elements in the required proportions in the molten state…. [… More info ..]
Scientists have developed techniques through which gases like nitrogen , oxygen, hydrogen, and helium can be converted into liquids. These techniques involve cooling of the gas to a certain temperature and then it is compressed to a very high pressure….. [… More info ..]
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