aubreyjanoski585
aubreyjanoski585 aubreyjanoski585
  • 25-05-2021
  • Advanced Placement (AP)
contestada

How was information transferred using a telephone before fiber optic cables?

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celcillia1 celcillia1
  • 25-05-2021
In the late 19th and early 20th centuries, light was guided through bent glass rods to illuminate body cavities. ... In the process of developing the gastroscope, Curtiss produced the first glass-clad fibers; previous optical fibers had relied on air or impractical oils and waxes as the low-index cladding material.
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