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From Ancient to Modern Indian History, Indian subcontinent encounter by foreign travellers and some of them left valuable accounts of their travels. These foreign accounts gave us a valuable objective document that will help us to understand the social-political-economic condition of a particular era. These travellers account cannot be understood without knowing their perception of writing. Here, we are giving the list of famous travellers who visited India during reign of different rulers of Vijayanagar Empire.
May 29, 2014
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A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound.
Sep 18, 2012
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An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron.
Sep 18, 2012
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An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged.
Sep 17, 2012
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A wave is a phenomenon whereby energy is moved without the transference of any material. X-rays, ultraviolet rays, light and radio waves all travel at the same speed through a vacuum.
Dec 11, 2010
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When a red hot piece of iron cools down, it transfers energy to its surroundings in three possible ways: conduction, convection or radiation.
Dec 11, 2010
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The interactions between matter can be explained by four forces.
Dec 11, 2010
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States of Matter
Dec 11, 2010
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Special theory of relativity was formulated by Einstein.
Dec 11, 2010
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Radioactivity was gradually understood in terms of the disintegration of atomic nuclei. The three types of radiation are alpha decay, beta decay and gamma decay. Alpha radiation occurs when an unstable nucleus breaks down so as to eject a fast-moving nucleus of helium, which consists of two protons and two neutrons.
Dec 11, 2010
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Otto Hahn and Fritz Strassman (1902-80) discovered nuclear fission in 1938. When an isotope of uranium-235 was bombarded with neutrons, it split into two lighter nuclei along with, on average, three neutrons. These neutrons were capable of bombarding and splitting other nuclei, causing more fission to take place.
Dec 11, 2010
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Kinematics covers a broad range of topics, from bodies falling to earth, to the description of bodies moving in a straight line, to circular motion.
Dec 11, 2010
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Measurement Units
Dec 10, 2010
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Modern physics sees heat as energy collectively possessed by the particles making up a gas, liquid or solid. A body which possesses energy has the ability to do work.
Dec 10, 2010
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Electromagnetism is the study of the effects caused by stationary and moving electric charges.
Dec 10, 2010
