Physics: Question from 8.2.4 (World communicates) (1 Viewer)

[Master Gopher]

In 8.2.4 there is a dot point that says

"Describe applications of reflections of light, radio waves and microwaves in information transfer".

Now I have convex mirrors/periscopes/all the obvious for light, and AM radio waves reflecting off the ionosphere, but what about microwaves? I've looked in all my notes and through a couple of study guides, and I can't seem to find anything that covers it. Any ideas?
Thanks for any help

 

[klaw]

Microwaves can pass through the ionosphere, allowing it to be used for radar, space communication, meteorology, microwave landing system for aircrafts, etc

 

[Master Gopher]

See, I know I've had too much caffeine when I can't think of things like that. It was hardly complicated or obscure. *sigh*

Thankyou very much. *Goes back to hermit-dom*

 

[klaw]

hahaha np.....