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(Cost), audio delay (¼ second) 1000 trillion Doctors (medical) Touching other fibers (scratches,finger oil) Perfectly transparent fiber (pure glass) (pure) Sand 10 km The Internet (phone) Hamilton (or Toronto) Military, space station Many are still in use. With fire beacons
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(Cost), audio delay (¼ second) • 1000 trillion • Doctors (medical) • Touching other fibers (scratches,finger oil) • Perfectly transparent fiber (pure glass) • (pure) Sand • 10 km • The Internet (phone) • Hamilton (or Toronto) • Military, space station • Many are still in use • With fire beacons • Weather (visibility poor, rain/cloud/mist) • War was over • 1858 • Sending signals as notes, combining messages on wire • Patented telephone • Water • Turn signal on & off (wink on & off) • Can’t travel as far, obstacles get in way
Note: students may have difficulty with 5,8,12, and 14 For more lessons, visit www.chalkbored.com