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Depends on what you mean with "higher". Mind that "humidity" is a bit ambiguous here - it can be referred to as absolute and relative (which is probably a source for misunderstandings for chemtrail believers). It's a fact that the absolute humidity (amount of water molecules in a given volume)...

I have also had trouble with links in comments. Sometimes those posts are public immediately, sometimes they are only visible when logged in. It's probably a choice the channel/video owner can make. I usually check my Youtube posts with a different browser and no log-in, in order to see what's...

Have a good cup of tea with the cake and add up to 870 µg of aluminum to the meal ... (Max. detected level for black tea infusion in this study, assumed cup size 0.2 liters)

If you search Google Images for "aerodynamic contrail", the result will include a number of examples where the whole wings are involved with creating the trail. As the others have noted, this type of trail requires high humidity, but it can form at higher temperatures than exhaust trails usually...

This image shows a display at some national or show event, which implies that these are not regular contrails but rather smoke trails for optical effect. BTW, there are other versions of the photo around, showing the logo of "DefenceTalk.net" where the largest available version can be found -...

The picture does not even show a 'tanker' vehicle - the issue of the text is that in Vienna (not Frankfurt), only 'dispenser' vehicles are required because the fuel is distributed through a permanently installed sub-surface pipe system.

Ah, that got me confused ...

Even so, there is a scale and an entry field for pressure values. It would just be a tad less abstract when it's illustrated that pressure is directly related to altitude.

For descriptive reasons, it would be great to display altitude (standard atmosphere) related to the selected pressure - probably as a separate text label or even an editable text field (with a disclaimer attached).

Well, there is the known 1936 film of a contrail over Paris. Would you count that? (around 1:29)

Thanks, I'll include a link in the OP. It's not a subforum that I visit regularly.

A fresh photo was published on http://www.spaceweather.com/ Here is the explanation from the portal page: Yesterday evening, Dec. 28th, Marcus Åhlund was whale watching [...] off the coast of Tromsö, Norway, when the darkening sky suddenly lit up with color. It wasn't the aurora borealis. It...

Yes, I'm aware of that. My opinion is that officially issued Russian publications related to science need to be scrutinized particularly well. I should have added a comment to the link accordingly. Even in the "Blue Skies" video I linked, it becomes painfully obvious how scientific thinking is...

Our old aquaintance Jim Lee has dedicated a long page to a ragtag collection of pieces about active rainmaking. http://climateviewer.com/2014/03/26/cloud-ionization-electric-rainmaking-laser-guided-weather-modification/ Regarding the Russian 'ionisator division', there is an appearance in the...

@MikeG, I think we've arrived at the point where the original post in this thread can be appended with the message from the U of Wisconsin and the other artefact examples. If completed, the thread title deserves being stripped of the question mark and receiving the DEBUNKED label ...

Yes.

As I understand it, Saive now ponders about aerodynamic contrails ("wing sprayers") being experiments with dispersing chemicals inside the engine pylons, so that the drain masts at the back side of the pylons are "draining" the chemicals. He thinks this is not the main method of spraying...

Dane Wigington has replied to the tweet by Saive I've linked before: @Hsaive Look-up states Airbus documents are faked: @LookUp_campaign

I've got the impression that Saive likes to see himself as an "independent thinker", even within the chemtrail community. There may also be other motives, like a concern about being obsoleted by larger figures of said community; he probably saw an opportunity to dissent within the constraints of...

Harold Saive takes on the position of a debunker ... He has re-written his pylon drain article and issued this tweet: DEBUNKED: Pylon Drain Tubes Not Chemtrail Nozzles Airbus documents confirm pylon tubes used to drain fluids