The longest time through spacetime
A new special relativity video follows moving clocks, the twin paradox and proper time to explain why an inertial path between two events maximizes elapsed time.
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Physics Explained
Physics Explained makes detailed physics videos that connect the mathematics of quantum mechanics, relativity and electromagnetism with the history behind the ideas.
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Building Navier-Stokes from scratch
Physics Explained derives the fluid equation step by step, starting with Newton’s second law and adding pressure, viscosity and external forces.
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Can light become a black hole?
A new video explores the proposed light-made black hole called a kugelblitz, and how electron-positron pair production could carry energy away before one forms.
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A closer look at quantum uncertainty
Using the single-slit experiment, this video examines what position and momentum uncertainty actually represent.
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What is inside the nucleus?
Physics Explained traces how the nucleus was discovered and measured, then explores nuclear forces, binding energy, shells and radioactive decay.
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