Summary
Summary ETA Fiber Optic Installer Certification - Study Guide Exam Answered.
ETA Fiber Optic Installer Certification - Study Guide Exam Answered. Light is electromagnetic energy with a _____ frequency and a _____ wavelength compared to radios. What type of light is used in fiber optic transmissions? What are the four items needed for a fiber optic system to work? 1 mW is th...
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