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Author Question: To determine the orbital period of a visual binary, we must measure a. brightness. b. position ... (Read 90 times)

leo leo

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on: Jul 27, 2018
To determine the orbital period of a visual binary, we must measure
 
  a. brightness.
  b. position on the sky.
  c. wavelengths.
  d. luminosity.
  e. temperature.

Question 2

Increasing the diameter of a telescope I. increases its light-gathering power. II. increases its resolving power. III. increases it magnifying power. IV. increases its chromatic aberration.
 
  a. I, II, III, & IV
  b. I, II, & III
  c. I, II, & IV
  d. III & IV
  e. I & II


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ErinKing

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

b

Answer to Question 2

e


leo leo

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Reply 2 on: Jul 27, 2018
:D TYSM

bassamabas

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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