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For those that can't fathom the large amounts of normal jet traffic overhead, I like to show them the graphic attached. Also helps when you realize those lines are often 20-50 miles wide and they will stack planes as close as 1000 feet apart vertically on them.
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"Eternal vigilance is the price of supremacy" ------------Mark Twain "Women are like Voltron. The more you can hook up, the better it gets." |
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Where I am, and at any international airport I have photographed at, there are typically areas outside the secure perimiter which are reserved for, nerds such as you and me, at which we are at liberty to take photos. I cannot say for certain in your case as I do not reside in the US. However, I am prepared to bet that if you go to one of the appointed areas for photography, you will have no problem. |
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Quite possibly the east/west aircraft might be on an enroute arrival/departure procedure, which aren't part of the jet airway system, but still extend for a good distance from major airports.
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I will go out on a limb here.
Question to tbm: Are you familiar with ETOPS operational restrictions? These give rise to a scenario where at any given location you could see contrails with pretty much any orientation, if you were familiar with them |
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Well, it's only counterintuitive if one's grasp of geography comes from 2D maps rather than a globe.
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Bring back Firefly! "It is quite clear that Occam's razor does not sharpen in your pyramid." (Nicolas) "Still, a man hears what he wants to hear and disregards the rest." (Paul Simon) |
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Well, it's only counterintuitive if one's grasp of geography comes from 2D maps rather than a globe.
That's right. The easiest way to visualize great circle routes (the shortest distance on a sphere) is to run a string between the two points on a globe. The results can be surprising. If you look at a flat map, you'd think the best route to fly from San Francisco to Japan would be to head west near Hawaii. Actually, the great circle route goes pretty far north around Alaska's Aleutian Islands. |
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At night the stars put on a show for free (Carole King) One Earth, One Sky - IYA 2009 |
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At my location in North Dakota many of the Europe to California flights pass overhead. The traffic between Japan and Korea to Chicago and Atlanta also crosses over here, and on an East-West line I see the flights between Toronto, Montréal, Boston, NYC, etc heading to and from Vancouver and Seattle. It's a pretty good location for watching high altitude long distance flights.
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Online Great Circle Mapper
http://gc.kls2.com/ Shows route between any 2 airports if you just input their codes. Also provides a pretty decent FAQ on the subject. |
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A few years ago, I took a transatlantic flight. I don't fly that often, and chose to sit next to the window so I could look outside or at least lean against the bulkhead for a nap.
I was surprised at the high visibility of ships' wakes from that altitude. If I was a CT, I guess I could claim that these ships were leaving some kind of trail. After all, my sailing dinghy doesn't leave that kind of wake!
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"That's Not Blight. It's New Jersey" - The Wall Street Journal |
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Another great observation opportunity at that altitude is sundown. If you're lucky enough to be flying directly east or west at sundown, you can actually see the umbra and penumbra revealed through the interference medium of the air at that altitude, as a sort of transverse slice through it. There's a lot to be said about direct observation of planetary-scale illumination.
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"Who does not know anything, must believe everything." Baroness Marie von Ebner-Eschenbach 1830-1916 |
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Hi,
After lurking for many months, this is my 1st post. My fiance really believes in all the Chemtrails/NWO/Illuminati/Nibiru/2012 stuff. (To the point where he is leaving me, his partner of 12 years and our 3 young children to go to somewhere he believes he has a better chance of surviving. By the beginning of July, he says. I refuse to go along with it all as I pretty much think it's a load of bunkum to put it politely. But that's a very long story that i won't post here.) Basically, I've tried to counter all his claims about chemtrails but I can't explain the black lines that are sometimes seen with a plane seemingly following them. www.youtube.com/watch?v=nzMwFR7RMPg Can anyone help? I know you guys are probably sick to death of all this stuff but it's a very real and current problem for me. Thanks. |
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It's a shadow. The contrials cast shadows. Look at the other shadows and you can see that the plane is flying almost directly away from the Sun, therefore would be following the shadow cast by its own contrail.
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"The very powerful and the very stupid have one thing in common: They don't alter their views to fit the facts, they alter the facts to fit their views." The Doctor, Doctor Who: The Face of Evil. |
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Just to echo what Jason said. Clouds can also make such shadows, not just airplane contrails. Check out this website which also has links to rocket contrail shadows and airplane contrails. The last link shows all the optics involved.
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At night the stars put on a show for free (Carole King) One Earth, One Sky - IYA 2009 |
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