Final answer:
Radio telescopes detect low-frequency waves by collecting and amplifying radio waves emitted by celestial bodies.
Step-by-step explanation:
Radio telescopes detect low-frequency waves. These telescopes are designed to observe objects in the radio frequency range of the electromagnetic spectrum. They use large dish-shaped antennas to collect and amplify radio waves emitted by celestial bodies, allowing astronomers to study radio emissions from distant objects such as stars, galaxies, and quasars.
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