3 ms·
free space (air) Surely that's not the science. Space and air are not the same thing. Air is, of course, a scattering medium.
by solipsism 5y ago
free space (air)
Surely that's not the science. Space and air are not the same thing. Air is, of course, a scattering medium.
- jasonwatkinspdx 5y agoFree space is commonly used to refer to EM propagation in air in RF contexts. For example: https://en.wikipedia.org/wiki/Free-space_path_loss https://en.wikipedia.org/wiki/Free-space_path_loss Here the distinction is between propagation models that include ground plain, terrain, or airborne clutter.
- solipsism 5y agoTIL. Still, I think the strongly in strongly scattering medium is important. It's very confusing to leave it out.