Thermal energy is the energy possessed by an object or system due to the movement of particles within the object or the system. Therefore, thermal energy can be described as the ability of something to do work due to the movement of its particles. So, the faster the particles move within an object or system, […]
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Teaching material for 12th grader Physics students: Q. Describe in brief the discharge of electricity through a gas. or, Ans: We know that the gases are good insulators of electricity at normal pressure and temperature. But, we can make them conducting by: Applying very high voltage (~30,000 V/cm) Reducing its pressure to a very low […]
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Syllabus/curriculum of Physics course-class XII designed by NEB. Physical Optics: [Mark scheme: 9 marks⇒LAQ-1/2, SAQ- 1/2, NP- 1/1] 1. Nature and Propagation of Light [6 Teaching hours]⇒ Nature and sources of light, electromagnetic spectrum, Huygen’s principle, reflection and refraction according to wave theory, velocity of light: Foucault’s method; Michelson’s met
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09/16/2020, Nepal. Electron is a negatively charged common particle found in all types of matter. The term “electron” was first suggested by Stoney in 1891, although the electron was not discovered until 1897, by British physicist J.J. Thomson. Each electron carries one unit of negative charge (1.602 x 10-19 coulomb) and has a very small mass […]
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Miller and Urey experiment, a renowned experiment conducted in 1952 and published in 1953 by Stanley Miller and Harold Urey at the University of Chicago- considered as a breakthrough that suggested the ways for the formation or evolution of organic compounds out of inorganic ones by applying a form of energy. Their idea was based […]
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Molecular dynamics (MD) is a technique of computer simulation in which time evolution of large set of interacting atoms is followed by tracing their trajectory so that their corresponding equation of motion can be understood. Molecular dynamics is becoming a celebrating technique which is now being used routinely, mostly in applied investigation of a wide […]
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Water is the preliminary and fundamental requirement needed for everyday life. It is very unique molecule due to some important chemical properties, it has high surface tension and high value of specific heat capacity and more importantly, it is the only substance found on earth in its all three states, gas, liquid and solid. Our […]
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“How strange is the lot of us mortals! Each of us is here for a brief sojourn; for what purpose he knows not, though he sometimes thinks he senses it. But without deeper reflection one knows from daily life that one exists for other people — first of all for those upon whose smiles and […]
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Since historic times, we have wondered where we came from and where life originated. As it became apparent that the Earth was just one planet orbiting the Sun, that the Sun was just one star among ∼1011 in our galaxy, and that the Galaxy itself was only one such object among ∼1011 similar systems populating the Universe out to […]
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Professor Lawrence M. Krauss is an author of several books, more than 300 research publications & former Director of the Origins Project at ASU and former Professor, School of Earth & Space Exploration and Physics Department Arizona State University. I would like to welcome him in this session to talk about recent developments in cosmology. Professor […]
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