Save guides, add subjects and pick up where you left off with your BBC account. Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will ...
Adaptive liquid lens: A lens based on a new electrically responsive fluid changes shape, and thus focal length, when a voltage is applied. (Courtesy: Miao Xu, Hefei University of Technology) Materials ...
Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will reduce in speed as it travels through, causing it to change direction. Ray ...
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