RadioBanter - Photons?

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"rickman" wrote in message
...

I guess he is picturing the quanta as a pulse of a wave which it
*isn't*.

Consider a quiet band, and you receive a single dit, the letter E in Morse
Code.

Before there would have been no signal and neither after the dit.

So, if your RF photons do not have a beginning and an end, as they must do
as pulsed phenomenon, how come there is only signal during the duration of
the dit?

rickman wrote:
On 9/10/2015 3:03 AM, AndyW wrote:
On 09/09/2015 18:51, gareth wrote:
"gareth" wrote in message
...

AIUI, the wave / particle duality of the photon means that it has a
beginning
and an end, from the particle model.

The point of the duality model is that it appears to exist as both, or
may exist as something that exhibits the behaviour of both.

Don't want to be pedantic, but I think it is more that any given
experiment can show one or the other, but *not* both at once. Although
someone pointed out in another discussion that some experiment showed
both. It was an interference type of display, but the patterns were
formed of individual dots from individual photons. But I expect there is
another way to explain the results.... but above my pay grade.

Therefore, the wave model must exhibit amplitude modulation to have
such a
beginning and end.

Why must it?
It could have FM modulation or none at all. It could just start and end
(technically with a rectangular envelope but that would effectively be
no AM at all)
You do you claim it *must* have AM?

There is no reason to discuss this with him. He won't get what you are
saying. I guess he is picturing the quanta as a pulse of a wave which it *isn't*.

There is also little reason for me to point out the futility of
discussing this with Gareth. Every so often he starts a discussion and
the band starts playing. I don't know who is stupider, Gareth or the band.

Exactly, Evans is simply looking for an excuse to hurl his repertoire of
abuse. He often recycles old topics which have been explained to him
countless times in the past. Sometimes he digs up basic things he should
have mastered decades ago, eg the super regen, Or, as here, looks up a few
technical terms and launches into a topic he clearly has no knowledge of.

"gareth" wrote in message
...
"rickman" wrote in message
...
I guess he is picturing the quanta as a pulse of a wave which it
*isn't*.

Consider a quiet band, and you receive a single dit, the letter E in Morse
Code.

Gosh, Beanie, did you use a crib sheet to work that out?
--
;-)
..
73 de Frank Turner-Smith G3VKI - mine's a pint.
..
http://turner-smith.uk

"FranK Turner-Smith G3VKI" wrote:
"gareth" wrote in message ...
"rickman" wrote in message ...
I guess he is picturing the quanta as a pulse of a wave which it *isn't*.

Consider a quiet band, and you receive a single dit, the letter E in Morse Code.

Gosh, Beanie, did you use a crib sheet to work that out?

Don't forget, it took him 13 years to learn morse to 12wpm...

--
STC // M0TEY // twitter.com/ukradioamateur

"Brian Morrison" wrote in message
...
It's not like that. The photons and the wave-like effects of their
probability distribution functions, exist simultaneously. You cannot
separate them, therefore they are generated by a single process that is
exactly equivalent in both atoms and antennas.

In atoms, theenergu process is from energy transitions of individual
elelctrons, but that is not the mechanism in antennae.

"gareth" wrote:
"Brian Morrison" wrote in message
...
It's not like that. The photons and the wave-like effects of their
probability distribution functions, exist simultaneously. You cannot
separate them, therefore they are generated by a single process that is
exactly equivalent in both atoms and antennas.

In atoms, theenergu process is from energy transitions of individual
elelctrons, but that is not the mechanism in antennae.

Bit early in the day to be this boozed up, Gareth, isn't it?

--
STC // M0TEY // twitter.com/ukradioamateur

"Brian Reay" wrote in message
...
Exactly, Evans is simply looking for an excuse to hurl his repertoire of
abuse. He often recycles old topics which have been explained to him
countless times in the past. Sometimes he digs up basic things he should
have mastered decades ago, eg the super regen, Or, as here, looks up a few
technical terms and launches into a topic he clearly has no knowledge of.

Brian, M3OSN Old Chap, just because you are embarrassed that you do not
have the answers, that is no reason to let fly with such a gratuitous and
somewhat infantile tirade.

Shame on you , and you being a proud schoolteacher, and all.

Remember that you are better advised to just to be thought a fool than to
prove it
by typing on your keyboard.

But, while you're there, how come that the latest licence that you acquired
in Brit, M3OSN,
is one that is targetted for the 5-year-old?