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Author Question: The design of modern X-ray telescopes depends on: A) lenses made of germanium. B) the prime ... (Read 113 times)

Redwolflake15

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on: Jul 27, 2018
The design of modern X-ray telescopes depends on:
 
  A) lenses made of germanium.
  B) the prime focus design, with mirrors made of iron.
  C) grazing incidence optics.
  D) achromatic lenses to keep the X-rays in focus.
  E) the Cassegrain design, with mirrors made of lead.

Question 2

In terms of temperature alone, there are ________ terrestrial planets within the widest boundaries of the Sun's zone of habitability.
 
  Fill in the blank(s) with correct word


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recede

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

C

Answer to Question 2

three


Redwolflake15

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Reply 2 on: Jul 27, 2018
:D TYSM

tranoy

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Reply 3 on: Yesterday
Wow, this really help

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