Library — E
This page provides access to all physics articles covering topics that begin with the letter E.
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Eddy Current
What is the eddy current? Let me begin by explaining what we mean by eddy currents. When a conducting material is placed in a time-varying
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Elasticity
Elasticity is a fundamental concept in physics that describes how materials respond when forces act upon them, deforming their shape or size. When an external force stretches, compresses, twists, or bends an object, the material…
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Electric Current
Electric Current stands as one of the cornerstone ideas in physics and electrical science, forming the very foundation of how we understand the movement of charges in conductive pathways and the mechanisms by which energy…
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Electric Charge
Electric Charge stands as one of the deepest principles in physics, shaping how matter interacts and how the visible universe holds itself together. At the heart of every atom, every current, and every spark of…
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Ehrenfest Theorem
Ehrenfest’s theorem is a foundational result in quantum mechanics showing how the average, or expectation, values of quantum observables evolve in time in a way that resembles classical mechanics. It forms a conceptual bridge between…