Reflection and Absorbtion of Microwaves, also Masers

  • Thread starter cosmo123
  • Start date
  • #1
cosmo123
24
0
I have tried searching for answers to these questions but i can't seem to find them, so if anyone could help me it would be greatly appreciated.

How efficiently you can reflect microwaves? I know visible light can be reflected at 99.99% efficiency or something ridiculous like that, is it the same for microwaves?
Also, how much are microwaves absorbed as they pass through the atmosphere? I haven't been able to find any exact figures.
Finally, does anyone know what is the most powerful continuous-wave maser that's been made?
 

Answers and Replies

  • #2
f95toli
Science Advisor
Gold Member
3,385
902
They can be reflected extremely efficiently; I don't think there is any practical difference between microwaves and light in this respect.

The absorption will depend on the frequency of the microwaves (remember that "microwaves" refer to frequencies from a few hundred MHz up to about 1 THz or so) but also on the atmosphere; the amount of waver vapour (i.e the humidity) can make a huge difference, especially when dealing with higher frequencies.
 
  • #3
cosmo123
24
0
They can be reflected extremely efficiently; I don't think there is any practical difference between microwaves and light in this respect.

The absorption will depend on the frequency of the microwaves (remember that "microwaves" refer to frequencies from a few hundred MHz up to about 1 THz or so) but also on the atmosphere; the amount of waver vapour (i.e the humidity) can make a huge difference, especially when dealing with higher frequencies.

Ive been trying to find some figures for it at certain humidities or certain wavelengths, but i can't really find anything.:frown: I know the "radio window" goes from about 1cm to 11m wavelengths, where microwaves are absorbed very little, but it would be very useful to have some figures to work with.
 

Suggested for: Reflection and Absorbtion of Microwaves, also Masers

  • Last Post
Replies
2
Views
298
  • Last Post
Replies
10
Views
483
  • Last Post
Replies
15
Views
788
Replies
15
Views
487
  • Last Post
Replies
10
Views
7K
Replies
1
Views
404
Replies
5
Views
804
  • Last Post
Replies
8
Views
580
  • Last Post
Replies
25
Views
3K
Top