PHYSIC & OUR UNIVERSE : HOW IT ALL WORKS
FOR UPSC, SSC, RAILWAYS, NDA, CDS & STATE LEVEL COMPETITIVE EXAMINATIONS
physics & our universe
Physics
is the fundamental science. Its principles govern the workings of the universe
at the most basic level and describe natural phenomena as well as the
technologies that enable modern civilization. Physics is an experimental
science that probes nature to discover its secrets, to re¿ ne our
understanding, and to explore new and useful applications. It’s also a
quantitative science, written elegantly in the language of mathematics—a
language that often permits us to predict and control the physical world with
exquisite precision. Physics is a theoretical science, meaning that a few
overarching “big ideas” provide solidly veri¿ ed frameworks for explanation of
broad ranges of seemingly disparate phenomena
Our current understanding of physics traces to the work of Galileo and Newton in the 16th, 17th, and 18th centuries. Overthrowing 2000 years of misconceptions, these scientists laid the groundwork for the description of motion—a phenomenon at the heart of essentially everything that happens. The result is Newtonian mechanics: a simple, coherent theory expressed in 3 basic laws that even today describes most instances of motion we deal with in everyday life and, indeed, in much of the universe beyond Earth. Newtonian mechanics introduces some great ideas that continue throughout physics, even into realms where Newtonian ideas no longer apply. Concepts of force, energy, momentum, and conservation laws are central to all realms of physics—and all trace their origins to Newtonian mechanics. Galileo and Newton are also responsible for the ¿ rst great uni¿ cation in physics, as their ideas brought the terrestrial and celestial realms under a common set of physical laws. Newton’s law of universal gravitation recognized that a universal attractive force, gravity, operates throughout the entire universe. Newton provided a mathematical description of that force, developed calculus to explore the rami¿ cations of his idea, and showed de¿ nitively why the planets of our Solar System move as they do. Although Newtonian mechanics is more than 300 years old, it governs modern technologies ranging from skyscrapers to automobiles to spacecraft. This course begins, appropriately, with an exploration of Newtonian mechanics.
Book Name: Physics and Our Universe: How It All Works
Publication: THE GREAT COURSES :Corporate Headquarters
Authors: Professor Richard Wolfson
Language: English
Pages: 392
Size: 4mb
Format: pdf
Uploaded: Google drive
The author has clearly explained the concepts. The entire book is written in a systematic manner. The whole material is classified into type wise according to the level of difficulty of the questions. It contains different - different varieties of question too.
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