Harvard’s Department of Natural Sciences demonstrates an optical technique known as Schlieren Optics, that allows us to see small changes in the index of refraction in air. A point source of light is reflected from a concave mirror and focused onto the edge of a razor blade, which is mounted in front of the…
Harvard’s Department of Natural Sciences demonstrates an optical technique known as Schlieren Optics, that allows us to see small changes in the index of refraction in air. A point source of light is reflected from a concave mirror and focused onto the edge of a razor blade, which is mounted in front of the…
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