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FIGURE 25-33 The 300-meter radiotelescope in Arecibo, Puerto Rico, uses radio waves (Fig. 22-8) instead of visible light.

FIGURE 25-33 The 300-meter radiotelescope in Arecibo, Puerto Rico, uses radio waves (Fig. 22-8) instead of visible light.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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The 300-meter radiotelescope in Arecibo, Puerto Rico
(Fig. 25–33), is the world’s largest radiotelescope, but
many other radiotelescopes are also very large. Why are
radiotelescopes so big? Why not make optical telescopes
that are equally large? (The largest optical telescopes have
diameters of about 10 meters.)

FIGURE 25-33 The 300-meter radiotelescope in Arecibo, Puerto Rico, uses radio waves (Fig. 22-8) instead of visible light.
Transcribed Image Text:FIGURE 25-33 The 300-meter radiotelescope in Arecibo, Puerto Rico, uses radio waves (Fig. 22-8) instead of visible light.
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