Top Posters
Since Sunday
7
6
o
5
b
4
s
3
j
3
b
3
m
3
K
3
g
3
L
3
w
3
New Topic  
Tsync Tsync
wrote...
Posts: 3450
Rep: 8 0
8 years ago
Compared to optical telescopes, radio telescopes are built large because:
A) radio sources are harder to find.
B) radio photons don't carry much energy.
C) they're less expensive to make than optical telescopes.
D) radio waves are absorbed by the atmosphere.
E) atmospheric turbulence is more of a problem.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 344 times
3 Replies
Minoring in physics
Replies
Answer verified by a subject expert
RatatouilleRatatouille
wrote...
Top Poster
Posts: 3710
8 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Tsync Author
wrote...
8 years ago
Wonderful, thanks for your time and effort
Minoring in physics
wrote...
8 years ago
Cool Smiling Face with Open Mouth
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1016 People Browsing
Related Images
  
 678
  
 132
  
 97
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 820

Previous poll results: What's your favorite math subject?