Home |
Search |
Today's Posts |
#11
![]() |
|||
|
|||
![]() "Szczepan Białek" wrote in message ... "Mike Coslo" wrote ... Art is trying to convince us that EM energy is also a mechanical force, consisting of particles that fly off the end of our antennas like little turds. The ramifications of that means that everything we thought we know about RF - and in fact all physics is completely wrong. You have made a small mistake. Antennas are feed with the oscillating voltage. So the little truds fly off and come back. It is normal longitudinal wave. The key problem is what radiate: the end of an antenna or something else. What do you think? S* No, you've made a mistake ... again. EM waves are transverse waves in air (i.e. around a normal antenna) not longitudinal waves (see http://en.wikipedia.org/wiki/Longitudinal_wave). Sound waves are longitudinal because air pressure is a scalar, whereas electric and magnetic fields are vectors - they have polarisation. Also, antennas that radiate are fed with alternating current. The terminal voltage is almost immaterial in comparison with the current - that's what causes the radiation. If you want to discover what radiates I suggest you read one of the normal text books on the subject, like Kraus 'Antennas', and stop making up your own versions! Chris |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Force 12 - C3S | Antenna | |||
Air Force 1 | Shortwave | |||
Air Force One | Shortwave | |||
FS: Force 12 | Swap | |||
Force 12 C-4 | Antenna |