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Leto [7]
3 years ago
15

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

Advanced Placement (AP)
1 answer:
marin [14]3 years ago
5 0
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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Does pain count? I’d give that up... but fr I’d give up my sight so I wouldn’t have to look at myself anymore

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how did the colony of Plymouth and Massachusetts Bay Colony contribute to the origins of American independence and government ?
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