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Thread: S@H TT Team Goal




  1. #31
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    Ok thats fine, and I'm interested to see any info you come across.
    "In their capacity as a tool, computers will be but a ripple on the surface of our culture. In their capacity as intellectual challenge, they are without precedent in the cultural history of mankind." - Edsger Dijkstra

  2. #32
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    Well Arecibo can only focus on one point at a time and only cover about 33% of those stars that ppl get to see in the northern hemishere but, the radio dish at Parkes here in Australia should soon be online plus can cover almost 100% of the viewable stars in the southern hemishere with 13 focal points (and everyone should know that more stars can be seen down here than up north).

  3. #33
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    I did not know about there being more stars viewable from the southern hemisphere, thanks. At least I did not remember, if I did, since I did take quite a few classes in astronomy, both in High School and College. I do know about the 'Southern Cross,' but that's pretty much the extent of the Southern Hemisphere astronomy I can recall.

    Regarding the signals that the SETI people are trying to pick up, it is a common misconseption that we are trying to detect a signal that is a single, specific transmission for, say communication. What we are most likely to detect is an aggregate of all of the high energy transmissions that are eminating from an entire planet. This would be like the television signals that have been eminating from the numerous broadcast stations around the Earth. At a great distance, these numerous individual signals will blend together and form a seemingly single transmission over a relatively narrow band of the RF frequency. Of course a signal like this weakens greatly over the distances they would travel to reach another planet in another solar system and you would need to speak to a Radio Telescope Astronomer to get an understanding of the reasoning behind the frequencies that are scanned and analyzed in the myriad ways that have been devised.

    There is one other statement made above that is completely erroneous and I would like to straighten it out. The comment is: "The Gigantic dish made out of the natural shape of the land.." Whomever made that statement took no effort to research the facts. If you observe the extensive photo gallery that was recently provided on the SETI@home site, you can see that the reflective grid is formed of wire mesh that does not come in contact with the ground. It is supported by cables that are anchored to towers or other types of anchors at relatively few, key points.

    Now, why anyone would waste their time reporting completely erroneous information, as I am sure most, if not all, of what was stated above is, is beyond me. And another thing, for someone to completely believe in, and diseminate, such complete bull**** as the truth, without delving into the matter on their own, is also inexcusable.

    The more I think about the ignorance of the statements above and the complete arrogance of making a statement like "...if I am mistaken on the proven capability of our technology, please post a link to a concise stat sheet of the technology involved." The more completely dumbfounded I become.

    Now don't get me wrong, I am not trying to start an argument. After all, I could be wrong!

    (Gee, anyone out there old enough to have watched the sitcom 'Barny Miller?' In my opinion it was one of the greatest sitcoms of all time. You'd have to know about the character named Deitrickto know what I'm getting at.)
    :-(

  4. #34
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    Well, first of all I was simply referring the dish, and you knew what I was referring to, and therefore how the device was constructed is irrelevant. Especially when the Arecibo Radio Telescope in Puerto Rico IS built into the earth. Two paragraphs on why I am ignorant because I made that mistake is ridiculous. Not to mention your assumption that I was touting my statements as facts, DESPITE multiple comments that I was not sure. I apparently hit a tender nerve, and I apologize.

    Now here are the numbers to back up my post.

    The nearest Star is 4.22 Light Years away which equals 40,000,000,000,000. (thatís 40 Trillion) Kilometers. That would take our FASTEST space probes sixty thousand years to travel this distance. Source: http://www.anzwers.org/free/universe/stardist.html

    The farthest we EVER are from Jupiter is 0.001 Light Years away. (same source) And if our best dish can pick up a cell phone signal from Jupiter, then we would be able to pick up a signal from the next nearest Star and it would only need to have a magnitude 4220 times that of a cell phone, if it was directly focused at us which is possible. However it if was being randomly broadcast in all directions, like our cell phones, radio and TV broadcasts are, then it would suffer from spherical expansion, and the rate of which is equivalent to 4 ◊ pi ◊r^2

    So comparing Z will give us the ratio of how much more powerful a random signal would have to be. All distances in Light Years. And lets start with Jupiter.

    Z = 4 * 3.14 * .01^2
    Z = .001256

    Now from the nearest Star

    Z = 4 * 3.14 * 4.22^2
    Z = 223.67

    So lets compare the ratio of 223.67 : .001256
    That ratio equals 178084 : 1

    Meaning that for US to be able to clearly receive a randomly broadcast signal from the NEAREST Star system, it would need to originate with a signal strength 178,084 TIMES that of a cell phone. I think that is in the strength range of our TV broadcasts, but I'm not sure.

    So there you have it, SETI is not a hoax, at least not when you consider our very nearest neighbors. We'll get anything directly broadcast towards us, if we are listening in the right direction.

    There are only 227 systems within a radius of 32.6 light years, (source: http://joy.chara.gsu.edu/RECONS/TOP100.htm ) and most do not contain planets capable of supporting life as we know it.

    And so at that distance, Z = 4 * 3.14 * 32.6^2 = 13348.26
    Which gives us a ratio of 10,627,600 times the strength of a Cell phone. And that approaches the magnitude i sited in my previous post. And thats still only at 32.6 Light years away. The nearest Galaxy, the Andromeda Galaxy located at a distance of 2 million light years away, (source: http://hypertextbook.com/facts/1999/SaraLi.shtml ) and a signal from this distance would need to original at a strength equivalent of 50.2 Trillion times the strength of a cell phone, which I think you will agree is far more power than any broadcasts we have ever used. And that is once again, the nearest galaxy.

    And so to keep things in perspective, the best we can do at this time is still only a tiny tiny tiny portion of our galaxy, much less the universe, but we have to start somewhere. Finding hard evidence of life would be a phenomenal discovery, so more power to ya.
    "In their capacity as a tool, computers will be but a ripple on the surface of our culture. In their capacity as intellectual challenge, they are without precedent in the cultural history of mankind." - Edsger Dijkstra

  5. #35
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    I dont want to really get involved in this debate but I would like to point out that a cell phone only has .25watts of transmittion power. If you were to combine all of the cellphones in the world? hundreds of thousands of watts in Asia alone, then add on top of the the thousands of television Xmitters at about 50,000 watts, radio stations 50,000, Then step into the military RADAR range 500,000 watts (and that is not even the focused beam RADAR.) you would probably reach into the range described. and as Elrado pointed out over a great distance these radio stations (anything xmitting a signal) would blend together, Who knows..maybe the static space noise that we are listening to is actually a signal already we just dont know what it sounds like on the other end!

    And if we were only able to hear a cell phone from Jupiter how have we been able to track and recieve data from the orbiters around Jupiter? :shrug: I think the statistics that are quoted are like all statistics...bend them, mold them, and shape em into whatcha want!

    Edit...and that is just the US...I know for a fact that most other countries dont adhear to the power output recomendations of the FCC. and Some TV/Radio stations in Rural areas are allowed 100,000 watts of power, which is one reason I can hear radio from the east coast, well that and the ionosphere bouncing signals back down (SKIP)

  6. #36
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    LMAO.
    Thanks Cheez as I was wondering how much power does a cell phone have as thats the only thing he didnt really say.

  7. #37
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    You got me thinking about and researching Jupiter Zeradul....Seems there's a lot of discrepancies in opinions regarding Jupiter's surface temperature, composition, gravitational pull, etc.....
    I was wondering......would you go to Jupiter, give us a call on your cell phone and tell us what the weather's like? We'll be listening for ya at our computers.....:laugh:
    <img src="http://www.statgfx.com/statgfx/folding/?&username=Wordbiker&border=0,255,0&tr ans=yes&template=fah_original&.jpg" alt="www.Statgfx.com" />
    Revenge is just a respawn away....Pagosa LAN Parties

  8. #38
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    Damn...Can you hear me now? good

  9. #39
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    Damn...Can you hear me now? good
    Haha, thats awesome.
    "In their capacity as a tool, computers will be but a ripple on the surface of our culture. In their capacity as intellectual challenge, they are without precedent in the cultural history of mankind." - Edsger Dijkstra

  10. #40
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    ET phoned home and he didnt use a cell phone!
    We can do it. :rofl:

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