A large region of ________ wavelengths are not affected in any way by Earth's atmosphere, and so astronomers can effectively observe at these wavelengths even at sea level.
A) X-ray
B) ultraviolet
C) gamma-ray
D) infrared
E) radio
Correct Answer:
Verified
Q36: The diffraction limit of a 4-m telescope
Q37: Before charge-coupled devices (CCDs) were invented, what
Q38: The first astronomical detector was
A) the CCD.
B)
Q39: Why can you see fainter stars with
Q40: The image of a star in the
Q42: You hear a news story about an
Q43: Why do astronomers use monochromatic CCDs instead
Q44: An atmospheric window is
A) a giant glass
Q45: A diffraction grating is
A) a filter for
Q46: Astronomers can use ground-based telescopes to observe
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