Library — D
This page provides access to all physics articles covering topics that begin with the letter D.
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Drift Current
The phenomenon of drift current represents one of the most fundamental mechanisms of charge transport in semiconductor physics and constitutes a cornerstone concept in understanding the electrical behavior of electronic devices. At its essence, drift…
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Doppler Effect
The Doppler effect stands as one of the most fundamental and observable phenomena in wave physics, describing the apparent change in frequency or wavelength of a wave as perceived by an observer moving relative to…
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Drift Velocity
Drift velocity is a fundamental concept in electricity and solid-state physics that describes the average velocity with which charged particles move through a conductor when an electric field is applied. Although charges inside a metal—typically…
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Displacement
Displacement is one of the most fundamental ideas in physics, yet it is also one of the most frequently misunderstood. At first glance, it may seem interchangeable with distance, but the two describe very different…
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Degree of Freedom
In physics, the degree of freedom stands as one of the most fundamental yet far-reaching ideas, connecting diverse branches such as mechanics, thermodynamics, quantum theory, and statistical mechanics. At its heart, this concept quantifies how…