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ETA-I Study Guide (Fiber Optics Installer Certification) (FOI) With 51 Exam Questions With 100% Correct Answers.
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An optical fiber works based off of a principle known as; - ️️Total Internal Reflection. The bending of light as it passes from one transparent material into another which has a different refractive index is what? - ️️Refraction. Light is electromagnetic radiation in the wavelength ra...
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