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Curated Video
Exploring the Role of Light in the Universe
What is the purpose of light? How does light work? Why does Light exist? There had been a controversy about whether light was particles or waves. Albert Einstein showed that light must come in discrete packets of...
Crash Course
Crash Course Physics #37: Maxwell's Equations and Electromagnetic Waves
In the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an ecectric current. He also found that electric fields sometimes act like magnetic fields, and developed...