Waves vs Particles
 

Cecil Moore wrote:
cliff wright wrote:

The null results of SETI do not surprise me for a similar reason. If
there are advanced starfaring races out there radio or other EM
communication would be woefully inadequate and either not used at all
or only for very specialised (and slow) directional links which are
unlikely to send data towards Earth.


If I was a member of an advanced race, I would be using
entangled particles for FTL communications. However, I
would also be listening for those primitive slow obsolete
EM waves.

Well Cecil, you might be listening, but I might not be sending!
It often amuses me to consider just how naive humans can be in
advertising their presence in our spiral arm for a long time now.
Why do so many assume that an advanced race might have such a benign
attitude to other intelligences. We probably don't even share DNA
so why should we seee things in the same light.
See Larry Niven's "Tales of known space" (about 1966) for an example of
a race that got more than it bargained for when it met the Kzin through
radio.
Cliff Wright.

Waves vs Particles
 

cliff wright wrote:

Well Cecil, you might be listening, but I might not be sending!
It often amuses me to consider just how naive humans can be in
advertising their presence in our spiral arm for a long time now.
Why do so many assume that an advanced race might have such a benign
attitude to other intelligences. We probably don't even share DNA
so why should we seee things in the same light.
See Larry Niven's "Tales of known space" (about 1966) for an example of
a race that got more than it bargained for when it met the Kzin through
radio.


So we should wrap the earth in a Dyson sphere to make sure none of
those evil ET's do us harm?

Yours and others phobia do make for great movies though.

Lets think about it.

Any "evil" ET's that were advanced enough to find and destroy us
wouldn't likely need to find our radio transmissions to find us. The
earth has plenty of cues that there is life here. And any aliens who
could physically come here would be able to find those clues.

- 73 de Mike N3LI -

Waves vs Particles
 

Michael Coslo wrote:
Any "evil" ET's that were advanced enough to find and destroy us
wouldn't likely need to find our radio transmissions to find us. The
earth has plenty of cues that there is life here. And any aliens who
could physically come here would be able to find those clues.

Ever wonder why Elohim (Gods) was plural in Genesis?
--
73, Cecil http://www.w5dxp.com

Waves vs Particles
 

Cecil Moore wrote:
Michael Coslo wrote:
Any "evil" ET's that were advanced enough to find and destroy us
wouldn't likely need to find our radio transmissions to find us. The
earth has plenty of cues that there is life here. And any aliens who
could physically come here would be able to find those clues.

Ever wonder why Elohim (Gods) was plural in Genesis?


It is an intriguing concept. Gotta wonder about that "wheel in a wheel"
business also.


- 73 de Mike N3LI -

Waves vs Particles
 

All,

Some textbooks use c with a subscript for propagation velocity. When
we use c for propagation velocity we can talk about a "particle"
accelerated to a velocity v such that

c_h2o v c_free_space

Closer to home, we can imagine a cosmic ray passing the shack with a
velocity such that

c_RG58 v c_ladder_line

I suggest anyone wishing to clarify his or her posts apply subscripts
to c to indicate how c is being used.

Thank you,

Steven, KD7YTE

Waves vs Particles
 

Cecil Moore wrote:
Michael Coslo wrote:
Any "evil" ET's that were advanced enough to find and destroy us
wouldn't likely need to find our radio transmissions to find us. The
earth has plenty of cues that there is life here. And any aliens who
could physically come here would be able to find those clues.

Ever wonder why Elohim (Gods) was plural in Genesis?

Because the original story was made up by Canaanites who had a
pantheon headed by the Creator, a guy named El, who lived in a
tent in the desert, had two wives, drank Budweiser, and rode a
Harley between the astral planes. I thought you knew that, Cecil.
73,
Tom Donaly, KA6RUH

Waves vs Particles
 

Siyazini wrote:
All,

Some textbooks use c with a subscript for propagation velocity. When
we use c for propagation velocity we can talk about a "particle"
accelerated to a velocity v such that

c_h2o v c_free_space

Closer to home, we can imagine a cosmic ray passing the shack with a
velocity such that

c_RG58 v c_ladder_line

I suggest anyone wishing to clarify his or her posts apply subscripts
to c to indicate how c is being used.

Thank you,

Steven, KD7YTE

All;

Years ago I looked a book about Einstein's famous equation E=MC2. I
quickly closed it.

Steven's comments above, IMHO, pretty much cover the description of the
value of c in various media in a manner that has greater clarity than my
comments had.

Dave WD9BDZ

Waves vs Particles
 

Tom Donaly wrote:
Cecil Moore wrote:
Michael Coslo wrote:
Any "evil" ET's that were advanced enough to find and destroy us
wouldn't likely need to find our radio transmissions to find us. The
earth has plenty of cues that there is life here. And any aliens who
could physically come here would be able to find those clues.

Ever wonder why Elohim (Gods) was plural in Genesis?

Because the original story was made up by Canaanites who had a
pantheon headed by the Creator, a guy named El, who lived in a
tent in the desert, had two wives, drank Budweiser, and rode a
Harley between the astral planes. I thought you knew that, Cecil.


No Elohim would drink Budweiser!

- 73 de Mike N3LI -

Waves vs Particles
 

AI4QJ wrote:
"Cecil Moore" wrote in message
Ever wonder why Elohim (Gods) was plural in Genesis?

I think they were the same people as the Annunaki of the Sumerian writings,
correct?

Apparently, and when they mated with humans, the
offspring were called the Nephilim, mentioned a couple
of times in The Bible.
--
73, Cecil http://www.w5dxp.com

Waves vs Particles
 

AI4QJ wrote:
"Cecil Moore" wrote in message
t...

AI4QJ wrote:

"Cecil Moore" wrote in message

Ever wonder why Elohim (Gods) was plural in Genesis?

I think they were the same people as the Annunaki of the Sumerian
writings, correct?

Apparently, and when they mated with humans, the
offspring were called the Nephilim, mentioned a couple
of times in The Bible.


Yes, and at that time, before they allegedly engineered the DNA of homo
erectus to homo sapiens sapiens, none of the human ancestors were sending
out radio waves and yet we still were discovered by the Annunaki leader(s)
Elohim. Thus, Richard's concern of advanced civilizations discovering our
crude radio wave transmissions could come to fruition with or without
controls on radio emissions ;-)


Oh dear we are getting of the thread aren't we! So here goes. Anyone
read Robert Graves book "The White goddess"? Ther he makes a fairly
strong case that the religion of Genisis actually had 3 deities
1 God and 2 Goddesses. He get a lot of this idea from of all place's
Solomons temple and its construction. So maybe they wern't Aliens after
all just good old Polytheism.
In any event why hold up a sign saying "exploitable planet with
intelligent? race here" maybe they are a bit lazy just like us.
Cliff Wright