So that's all still correct information?
As far as I could tell. Didn't got through it point by point though.
So that's all still correct information?
@deidre Yes indeed. Glorious.
Please explain to me how contrails emitt from the outer side tail section of an airplane as shown in the below video.
As already advised, if you line-up the trail with the rest of the aircraft, you will find they match the position of the engines on the wing.
... in front of the rare tail wings.
Mick,
Please explain to me how contrails emitt from the outer side tail section of an airplane as shown in the below video.
If you have already addresed this elsewhere then a link would be great
Thank you
One problem I have in telling people that contrails can actually persist, and can even spread out to cover the sky, is that people tend to be suspicious of random people on the internet. So I decided to simply let 70 years of books on clouds speak for themselves.
Result: Every single book on clouds that I could find for the last 70 years says that contrails can persist for hours.
So next time some random guy on the internet tells you contrails can't persist and spread, then ask them why 70 years of books on clouds say the opposite.
My cloud book collection:
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Selected References:
1991: National Audubon Society Field Guide to North American Weather
https://www.flickr.com/photos/metabunk/sets/72157644020551293/
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1988: Exploring the Sky By Day, Page 49
https://www.flickr.com/photos/metabunk/sets/72157643850292503/
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1981: Peterson Field Guide to the Atmosphere, page 137
http://www.flickr.com/photos/metabunk/sets/72157641675780313/
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1972: Clouds of the World, page 130
https://www.flickr.com/photos/metabunk/sets/72157641669574294/
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1969: Clouds and Weather. Page 28
https://www.flickr.com/photos/metabunk/sets/72157641629656855/
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1957: Cloud Study: A pictorial Guide, page 79
https://www.metabunk.org/sk/1957CloudstudyapictorialguideOCR.pdf
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1943 - Cloud Reading For Pilots, page 73
http://www.flickr.com/photos/metabunk/sets/72157642316592915/
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The above are simply the books I personally own. There are many other books that can be found in scanned form on the internet:
1983: Encyclopedia Britannica:
http://books.google.com/books?id=SBM8AAAAMAAJ&q=contrails "last for several hours"
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1975 International Cloud Atlas:
http://library.wmo.int/pmb_ged/wmo_407_en-v1.pdf
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he says the book has been altered . this is from 2008 Mick or his blog post from 2009 http://tankerenemy.blogspot.com/2009/01/contrailsciencecom-fake-books.html
Well from what he said ( In Italian ) his any many other copies are alteredLooks unaltered to me. And books from the same publisher sometimes had the same ISBN. Plus, there's many other books.
His copy had a page missing and some rips. That's all.
Several people have copies of this book. Theres 17 for sale for different places on Amazon right now. Mostly ex-library. There are probably some still in libraries.
http://www.amazon.com/gp/offer-list...d_used_olp_sr?ie=UTF8&condition=used&sr=&qid=
Here's a video of my book. Does it look fake?
According to The Library of Congress the ISBN 0811719618 was issued to two different books.nope
His copy had a page missing and some rips. That's all.
Several people have copies of this book. Theres 17 for sale for different places on Amazon right now. Mostly ex-library. There are probably some still in libraries.
http://www.amazon.com/gp/offer-list...d_used_olp_sr?ie=UTF8&condition=used&sr=&qid=
Here's a video of my book. Does it look fake?
One problem I have in telling people that contrails can actually persist, and can even spread out to cover the sky, is that people tend to be suspicious of random people on the internet. So I decided to simply let 70 years of books on clouds speak for themselves.
Result: Every single book on clouds that I could find for the last 70 years says that contrails can persist for hours.
So next time some random guy on the internet tells you contrails can't persist and spread, then ask them why 70 years of books on clouds say the opposite.
Mick, just wanted to let you know i uploaded a copy of your video to my facebook page:
I cleaned up the sound a bit and added a walking bass line in the background.
Hope you don't mind.
Paul
Interesting account of a WWII dog fight from an article by Captain Burr Leyson called "Firepower, our air fighters knock out punch in combat!", printed in the September 1945 issue of Boys Life:
"Two fighters were locked in combat in the bitterly cold air of the sub-stratosphere nearly six miles above the steaming, fetid jungles of Guadalcanal. As they turned and swooped, each trying to bring his guns upon the other, their engine exhausts wove an intricate pattern of gleaming white vapor trails against the deep blue background of the tropical sky.."
http://books.google.com/books?id=_NU3fIn_HUEC&pg=PA6&dq=boys life captain Burr Leyson&hl=en&sa=X&ei=oOxvU-iVLNOyyATbxICYCA&ved=0CC4Q6AEwAA#v=onepage&q&f=true
Quite possibly the oldest account of a contrail I think I've ever seen. The article was titled "Cloud Formation by Supercharged Plane" and it appeared initially in US Air Service magazine in July 1921 and was also sampled in the Monthly Weather Review, July 1921.
This line was particularly interesting:
"After 20 minutes the streamer had drifted and spread until it merged indistinguishably with other cirrus clouds visible."
Links...
US Air Service - July 1921, pg 13
http://books.google.com/books?id=NM87AQAAMAAJ&pg=RA6-PA13&dq=US air service 1921 issue&hl=en&sa=X&ei=wLd8U4WzNpPksASA24HgBw&ved=0CDkQ6AEwAA#v=onepage&q&f=false
(fyi, link goes pg 13 of Sept 1921, need to scroll to July...)
Monthly Weather Review, July 1921.
http://docs.lib.noaa.gov/rescue/mwr/049/mwr-049-07-0412c.pdf
While these contrails are not persistent, they are described as being persistent for "60 degrees across the sky", and "long... looping", which implies more than a few seconds - especially at the very slow speeds of 1918External Quote:Our attention was first drawn to the sky by the sudden appearance of several strange and startling clouds–long, graceful, looping ribbons of white. These were tapering to a point at one end and at the other where they dissolved into nothingness 60 degrees across the sky, were about as broad as the width of a finger held arm's distance from the eye. On close observation we noticed some distance ahead of each cloud point the tiny speck of a chasse [sic] plane…. [N]ever before had I seen a plane writing in white upon the blue slate of sky.
I see the most common misconception as "atmospheric conditions that lead to contrails are rare". we have cirrus clouds here more often than not, so the atmospheric conditions are not at all rare.
The other day I had cirrus and lower cumulous etc.. what was so interesting was some planes left persistent contrails and some planes none, BUT because of the way the clouds were layered you could easily SEE why. I took pics but unfortunately the 'layers'/different heights of clouds don't really show up in my pics ; (
Ooops....am I responsible for this?Vindog discussion moved to:
https://www.metabunk.org/threads/vindogs-contrail-questions.3879/
he says the book has been altered . this is from 2008 Mick or his blog post from 2009 http://tankerenemy.blogspot.com/2009/01/contrailsciencecom-fake-books.html
Google books gives me : https://books.google.com/books?id=o...ved=0ahUKEwi5q7vB5oHUAhWIx4MKHWbFAp8Q6AEIKjABExternal Quote:And that's not the end of it! When in this book there are references to the trails shadows it is used a very recent term: "distrail". This is a brand-new expression and not even onEtymonline.com is possible to find it. So it's manifest that this word, coming from N.A.S.A. theories, cannot be part of a book printed in the 1972! Even the "cloud" idiom, used to define condensation trails is very modern expression of this century.
External Quote:I play Tammi and Rob a YouTube video by Mick West, who runs the conspiracy theory-debunking blog Metabunk. Going through 70 years of books on the science of clouds, West explains why, depending on atmospheric conditions, contrails can either evaporate rapidly or persist and grow into sheets of cirrostratus.
I saw that for the first time on a flight to Boston last October. I wondered if it had a name. I was gonna upload a picture of it, but never got around to it