Telamon wrote:
In article , Billy
Burpelson wrote:

Telamon wrote:

Do you understand the direct and moon reflected signals do not
exist at the same time anywhere on the earth?
Do -you- understand what I wrote? Do you grasp the concept? Please
pay attention.

Yes I understand what you wrote loser and I'm doing my best to
explain that your thinking is incorrect. I'm the second person tell
you this.

I -never- said the direct and reflected signals would exist at the
-same- time 'anywhere on earth'.

I didn't say you did. I was trying to give you the bigger picture.

What I -did- speculate on is that a *portion* of the echo (the
echo's leading edge) will be QRM'd *right as it leaves the moon*
(the first 0.75 seconds of the echo) by the trailing edge of the
incident wave (its last 0.75 seconds). Therefore, either a
shortened echo (due to full cancellation of the 'overlap', which is
unlikely) or an echo with a distorted or weakened leading edge
(more likely) will ultimately reach the earth, depending on how
much out-of-phase cancellation at the moon end of the circuit
occured.

OK you misunderstood what I wrote, which is these EM waves can mix as
you think in a antenna in the part of space where the wave going to
the moon exists in the same space time as the reflected signal.
Without the antenna these waves do not interact. With the antenna
they do interact. Is that redundant enough for you?

Logically, since no antennas exist in this area of space time your
idle speculation is moot. Now you have had two people explain this to
you so if this does not sink into your very dense skull give up.

Let me explain something else to you O'clueless wonder and that's if
you don't get it your problem not mine.


A basic web search on wave propagation theory says *nothing* about
needing an antenna for the signals to add or cancel. HSD gets it; RHF
gets it, but you don't seem to get it. Here are a few references that
may help you:

from http://en.wikipedia.org/wiki/Interference

Theory

The principle of superposition of waves states that the resultant
displacement at a point is equal to the vector sum of the
displacements of different waves at that point. If a crest of a wave
meets a crest of another wave at the same point then the crests
interfere constructively and the resultant wave amplitude is greater.
If a crest of a wave meets a trough of another wave then they
interfere destructively, and the overall amplitude is decreased.

[please note: it just says 'if they meet'. Nothing about needing an
antenna.]

Characteristics

All waves have common behavior under a number of standard situations.
All waves can experience the following:

* Reflection - wave direction change from hitting a reflective
surface

* Interference - superposition of two waves that come into contact
with each other (collide)

[Please note it says nothing about colliding in an antenna]

from http://en.wikipedia.org/wiki/Superposition_principle

First version of the superposition principle

* The phenomenon of interference between waves is based on the
superposition principle. Waves are usually described by variations in
some parameter through space and time (for example, height in a
water wave, pressure in a sound wave, or the electromagnetic field in
a light wave). The superposition principle says that the net
variation in that parameter caused by two or more waves traversing
the same space, is the sum of the variations of that parameter which
would have been produced by the individual waves separately. (For
waves described by vector fields, such as electromagnetic waves, the
sum is a vector sum.) In some cases, the summed variation has a
smaller amplitude than the component variations; this is called
destructive interference. Other times, the summed variation will have
a bigger amplitude than any of the components individually; this is
called constructive interference.

[Again, please note that -nothing- is said about requiring an antenna.]

from http://antoine.frostburg.edu/chem/se...glossary.shtml

Interference. Interfering.

Compare with constructive interference and destructive interference.
The amplitudes of waves moving into the same region of space add to
produce a single resultant wave. The resulting wave can have higher
or lower amplitude than the component waves. See constructive
interference* and destructive interference*.

[Again, please note that they refer to 'same region of space', and say
nothing of requiring an antenna]

Nothing in wave theory says an 'antenna' is required for interference to
occur.

Finally, I originated a polite, on-topic post. You responded with
vulgarity, name-calling and rudeness. Hopefully, you will eventually
awaken to the fact that your obnoxious behavior hurts no one but
yourself and serves only to illustrate your character (or lack thereof).