Why does the low frequency radiation or wave can not travel

[amaresh92]

greetings,
why does the low frequency radiation or wave can not travel for longer distance?
advanced thanks.

 

[mathman]

greetings,
why does the low frequency radiation or wave can not travel for longer distance?
advanced thanks.

In a vacuum, the frequency makes no difference. Through materials it is more complicated.

 

[amaresh92]

In a vacuum, the frequency makes no difference. Through materials it is more complicated.

but why is it so?

 

[nasu]

greetings,
why does the low frequency radiation or wave can not travel for longer distance?
advanced thanks.

This is not true in general. What exactly do you have in mind (regarding this question)?
It depends on the medium and frequency range.
Just one example: ultraviolet has higher frequency than red light an it travels less through ordinary glass.

 

[Naty1]

The energy, or power, of radiation is a major determinent of the useful range of radiation...like a radio or TV station...higher power stations can transmit and be detected at greater distances...

Once emitted, radiation in a vacuum travels forever,,.,but may be too weak to detect...in materials atoms absorb radiation energy so a wave loses power more quickly...

The behavior of EM radiation depends on its wavelength. When EM radiation interacts with single atoms and molecules, its behavior also depends on the amount of energy per quantum (photon) it carries.

http://en.wikipedia.org/wiki/Electromagnetic_spectrum


It turns out low freqency microwaves work well in the oceans:

Electromagnetic waves in the ELF frequency range (3–30 Hz) (see also SLF) can travel through the oceans and reach submarines anywhere.

http://en.wikipedia.org/wiki/Communication_with_submarines