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Author Question: Far-infrared astronomy must be done from high-flying aircraft because: A) far-infrared radiation ... (Read 254 times)

imowrer

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on: Jul 27, 2018
Far-infrared astronomy must be done from high-flying aircraft because:
 
  A) far-infrared radiation never reaches Earth's surface.
  B) far-infrared photons are highly energetic.
  C) far-infrared telescopes have zero diffraction fringe.
  D) far-infrared sources are very bright.

Question 2

A _____ has a main mirror called the primary mirror.
 
  A) reflecting telescope
  B) refracting telescope
  C) Keplerian telescope
  D) Galilean telescope


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nekcihc358

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

A


imowrer

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Reply #2 on: Jul 27, 2018
TY


nekcihc358

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Reply #3 on: Jul 27, 2018
You're welcome


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