In a radio telescope, the electromagnetic energy is gathered by ___________.
A) a spherical thin metal foil that refracts the radio waves to a point
B) a parabolic metallic mirror, commonly wire mesh
C) a solid slab or copper metal, formed into the shape of a parabola
D) a glass mirror with a reflective coating, similar to an optical telescope

Question

Quizplus · Accepted Answer

Radio telescopes typically use a parabolic metallic mirror, commonly made of wire mesh, to gather and focus electromagnetic energy. The curved shape of the mirror allows it to reflect the radio waves to a focal point, where they can be detected and analyzed. This design is similar to that of optical telescopes, but is optimized for the longer wavelengths of radio waves.

In a Radio Telescope, the Electromagnetic Energy Is Gathered by ___________