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The principles of light encompass its dual nature as both a wave and a particle, explaining fundamental behaviors such as reflection, refraction, diffraction, and interference. These principles reveal how light interacts with matter, enabling us to understand phenomena like color dispersion in prisms, image formation in lenses, and the wave-like interference patterns seen in experiments. The applications of light are vast, ranging from everyday vision and photography to advanced technologies such as fiber-optic communication, lasers in medicine and industry, and telescopes that probe the universe. By studying how light propagates, bends, and interacts with materials, scientists and engineers harness its properties to develop innovations that shape modern life, making optics one of the most impactful areas of physics.
This lecture is part of PHY 104 GENERAL PHYSICS 4 in the Physics department. The course has 30 recorded lectures across 10 series, all free to watch.