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To Boldly Go Where No Man Has Gone Before!

Sirkickyass said:
Actually readable radio/tv signals are, at best, 5-10 light years away.

If you want to get more depressing about it consider the type of content we actually send over the air vs. through other means (such as cable and the internet). If the aliens ever do find these signals they're going to get a picture of a culture that's significantly more focused on Wipeout! than Breaking Bad or The Sopranos.
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Are the tv and radio waves that we sent out in the 1800's not leaving earth at the speed of light? I know I flunked out of physics, but... What am I missing here?
 
E.J. Wells said:
Are the tv and radio waves that we sent out in the 1800's not leaving earth at the speed of light? I know I flunked out of physics, but... What am I missing here?
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Diffusion
 
Gameface said:
Diffusion
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Please.

In the phenomenological approach, according to Fick's laws, the diffusion flux is proportional to the negative gradient of concentrations. It goes from regions of higher concentration to regions of lower concentration. Some time later, various generalizations of Fick's laws were developed in the frame of thermodynamics and non-equilibrium thermodynamics.

So get that weak trash out of here.
 
E.J. Wells said:
Please.

In the phenomenological approach, according to Fick's laws, the diffusion flux is proportional to the negative gradient of concentrations. It goes from regions of higher concentration to regions of lower concentration. Some time later, various generalizations of Fick's laws were developed in the frame of thermodynamics and non-equilibrium thermodynamics.

So get that weak trash out of here.
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I had just typed exactly that post. :/
 
Thee jazz fan said:
Porn for the aliens is nothing more then a bad B sci-fy movie
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Bad sci-fi movies are going to save our planet.

Alien is all rollin up on earth and then starts watching a bunch of earth sci-fi. He be like damn those ape creatures can **** some **** up. I'm turnin around.
 
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E.J. Wells said:
Please.

In the phenomenological approach, according to Fick's laws, the diffusion flux is proportional to the negative gradient of concentrations. It goes from regions of higher concentration to regions of lower concentration. Some time later, various generalizations of Fick's laws were developed in the frame of thermodynamics and non-equilibrium thermodynamics.

So get that weak trash out of here.
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I'm not talking about molecular diffusion...

Photon diffusion is a situation where photons travel through a material without being absorbed, but rather undergoing repeated scattering events which change the direction of their path. The path of any given photon is then effectively a random walk. A large ensemble of such photons can be said to exhibit diffusion in the material, and can be described with a diffusion equation.
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As the radio waves bounce off random objects, and or become more spread apart as they travel away from a center point they eventually become weaker than the background noise and can no longer be received as an intelligible signal. Now maybe some super space aliens have a method of signal processing that can put all the pieces back together again, but we don't.
 
Gameface said:
I'm not talking about molecular diffusion...



As the radio waves bounce off random objects, and or become more spread apart as they travel away from a center point they eventually become weaker than the background noise and can no longer be received as an intelligible signal. Now maybe some super space aliens have a method of signal processing that can put all the pieces back together again, but we don't.
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Nobody said it had to be readable. I still stand by my awesomeness.
 
Gameface said:
I'm not talking about molecular diffusion...



As the radio waves bounce off random objects, and or become more spread apart as they travel away from a center point they eventually become weaker than the background noise and can no longer be received as an intelligible signal. Now maybe some super space aliens have a method of signal processing that can put all the pieces back together again, but we don't.
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Duh!
 
E.J. Wells said:
Nobody said it had to be readable. I still stand by my awesomeness.
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Maybe if you google the inverse square law that discussion will be more understandable.

I even found the article for you. https://zidbits.com/2011/07/how-far-have-radio-signals-traveled-from-earth/

At some point we're starting to make arguments about how much butterflies in South Asia are affecting my breakfast cereal. Waves 110 light years from earth are so weak they probably barely qualify as data.

I'm probably more likely to randomly get a snippet of I Love Lucy as a solar flare than read an episode that far out.
 
Sirkickyass said:
Maybe if you google the inverse square law that discussion will be more understandable.

I even found the article for you. https://zidbits.com/2011/07/how-far-have-radio-signals-traveled-from-earth/

At some point we're starting to make arguments about how much butterflies in South Asia are affecting my breakfast cereal. Waves 110 light years from earth are so weak they probably barely qualify as data.

I'm probably more likely to randomly get a snippet of I Love Lucy as a solar flare than read an episode that far out.
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A lot, my friend, a lot. At least +4/+4.
 
Sirkickyass said:
Maybe if you google the inverse square law that discussion will be more understandable.

I even found the article for you. https://zidbits.com/2011/07/how-far-have-radio-signals-traveled-from-earth/

At some point we're starting to make arguments about how much butterflies in South Asia are affecting my breakfast cereal. Waves 110 light years from earth are so weak they probably barely qualify as data.

I'm probably more likely to randomly get a snippet of I Love Lucy as a solar flare than read an episode that far out.
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As far as humans are concerned, you're probably right. However, I don't feel safe in saying that those waves are impossible to detect, since we obviously don't know what kind - if any - of tech that another civilization might have.
 
E.J. Wells said:
I know. I love how the drunk guy tries to act all smart by using big words. Sincearest apologies, my inebriated crony, but I can read you like War and Peace.
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For the record I wasn't drinking that night and I wasn't using big words.

I used to work in the laser engraving dept. at O.C. Tanners. At the time the dept. was part of R&D and I was part of the expansion from 3 personnel to 5, so I got a decent amount of training in lasers. Then I went into the Navy and worked on guided missile weapon systems and their corresponding radar systems, so I learned a good deal about radar energy and in conjunction with that the signal processing aspects of sending and receiving radar signals. After that I worked as an equipment then later as a process technician in the semiconductor industry in the diffusion dept. where I learned a little bit about molecular diffusion. I'm not an expert like someone with a degree in physics or engineering would be, but I do know a thing or two.
 
E.J. Wells said:
As far as humans are concerned, you're probably right. However, I don't feel safe in saying that those waves are impossible to detect, since we obviously don't know what kind - if any - of tech that another civilization might have.
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^^ Alien.

He knows what he's talking about.
 
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