| Home |
| Search |
| Today's Posts |
|
#11
|
|||
|
|||
|
Gene Fuller wrote:
Cecil Moore wrote: Lots of energy is flowing in both directions. Only the *NET* energy flow is zero. I guess you still have not gone back to the books to try to understand what electromagnetic energy is all about. A good review of the Poynting theorem would help to minimize the sort of nonsense you spouted above. You mean like Ramo & Whinnery in "Fields and Waves ..." 2nd edition, page 291? (begin quote) In such problems we are often most interested in the ratio of power in the reflected wave to that in the incident wave, and this ratio is given by the square of the magnitude of [rho], as can be shown by considering the Poynting vectors: Pz-/Pz+ = |rho|^2 end quote. Pz+ is the forward power Poynting vector. Pz- is the reflected power Poynting vector. The *NET* Poynting vector is the difference between those two Poynting vectors. If Pz+ = Pz-, then the net Poynting vector is zero but the component Poynting vectors still exist. If you disagree, please take it up with Ramo & Whinnery. -- 73, Cecil http://www.w5dxp.com |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Standing Wave Phase | Antenna | |||
| Standing wave on feeders | Antenna | |||
| Dipole with standing wave - what happens to reflected wave? | Antenna | |||
| Newbie ?: I've Built A Simple 1/4 Wave Dipole for 2 Mtrs. Could IMake a1/2 Wave? | Homebrew | |||
| What is a traveling-wave antenna? | Antenna | |||