Nitrogen dioxide slowly converts to Nitric acid on contact

[Loose}{Cannon]

Also ozone - BP -112C could keep them away from the tent.

And immediately bleach the tent white. Why are we playing this silly game? What's next, reindeer farts?

Welp, there goes the ozone - BP -112C  idea.     

[Nigel Evans]

Also ozone - BP -112C could keep them away from the tent.

And immediately bleach the tent white. Why are we playing this silly game? What's next, reindeer farts?

Welp, there goes the ozone - BP -112C  idea.     

It would depend on the ozone concentration and waxing/proofing of the canvas..... and it could weaken the fabric resulting in tearing in the wind.... 
But ozone isn't a key factor in the narrative, NO2 has to be there to explain the orange skin and foaming mouth. It could be dissolved in an aerosol/mist from microwave warming which would melt the atmospheric snow/graupnel which would mean that the nitric acid was already forming. They could have been breathing a vinegar mist.

[Loose}{Cannon]

But....  there is already an explanation for the orange skin.   

[Nigel Evans]

But....  there is already an explanation for the orange skin.   

Remind me.

[Jacques-Emile]

Finally, we have a person on the board to evaluate others' opinions!  Congratulations!
Since you are taking this position, I suggest that you use Karl Popper's philosophy of the evaluation of scientific hypotheses. (See https://plato.stanford.edu/entries/popper/ ) 
A summary:

Popper accordingly repudiates induction and rejects the view that it is the characteristic method of scientific investigation and inference, substituting falsifiability in its place. It is easy, he argues, to obtain evidence in favour of virtually any theory, and he consequently holds that such ‘corroboration’, as he terms it, should count scientifically only if it is the positive result of a genuinely ‘risky’ prediction, which might conceivably have been false. For Popper, a theory is scientific only if it is refutable by a conceivable event.

If you use Popper's logic, the suggestion that NO₂ is present as a gas in the tent is subject to the refutation that NO₂ cannot exist as a gas at these temperatures.  Application of Popper's rules to a hypothesis is most certainly indeed a half decent contribution to solving this mystery in refuting a false hypothesis.
Anyone, of course, may extend the hypothesis with further conditions, such as the presence of a mechanical device to manufacture warm NO₂ gas in the tent.  Yes, of course, that overcomes this refutation by temperature.  One can continue to apply bandages to one's proposals to cover the wounds placed by reality.
For my friends who wish to submit hypotheses for your evaluation, I suggest that we not be lazy.  We should try to come up with ideas that are not instantly refutable by scientific principles present at the site at that time.  This also includes irrefutable propositions like the Vaviaga, the Fallen Angels, the Ball of Ligtning.  These cannot be refuted using science.  Popper suggests that the irrefutable cannot be scientific.

[Nigel Evans]

Finally, we have a person on the board to evaluate others' opinions!  Congratulations!

Q. Who was it that asked - "Why are we playing this silly game?".
Wrt the content of your post referring to the bp of NO2 - you are omitting the possibility of a transient situation where a microwave field upstream in the wind (perhaps as photographed by Semyon) heats the air and said NO2 which then passes across the tent. I like the idea that this plume is electrically attracted to earth through the tent but it's not a key feature of the narrative just a nice to have, ditto ozone. The plume raises the temperature of the surrounding snow, creating the conditions for sastrugi, persistent footsteps and a hot spot. It's even possible that this plume was hot enough that they quickly exited the tent to escape the heat.... It would fit with this narrative that the plume is relatively narrow so that the group stand nearby and consider their options and also that Semyon and Nikolai escape it's effects.

As for Popper, the goal here is not to construct scientific theories but to create plausible narratives that can survive (sensible) criticism.

[Jacques-Emile]

You do realize that what you just posted is nonsense, no? Microwave bands don't just appear like brooms in the Sorcerer's Apprentice?!

[Nigel Evans]

You do realize that what you just posted is nonsense, no? Microwave bands don't just appear like brooms in the Sorcerer's Apprentice?!

Bands? Brooms?
You accept that microwaves create NO2 yes?So why can't that NO2 blow downwind as a plume?

[Jacques-Emile]

You do realize that what you just posted is nonsense, no? Microwave bands don't just appear like brooms in the Sorcerer's Apprentice?!

Bands? Brooms?
You accept that microwaves create NO2 yes?So why can't that NO2 blow downwind as a plume?

So that is how they warmed up their cocoa?  And they all walked down the hill in search of an electrical plug for extension cord?  I suppose so.

[Nigel Evans]

So that is how they warmed up their cocoa?  And they all walked down the hill in search of an electrical plug for extension cord?  I suppose so.



My purpose for posting here is to try and develop a plausible narrative for the DPI.
What's yours?

[Nigel Evans]

NO2 plume filmed from plane? -

[Loose}{Cannon]

Must be......  A piloted fireball. 

[Nigel Evans]

Here's another -

[Nigel Evans]

https://www.ncbi.nlm.nih.gov/books/NBK138707/
"While the boiling point of nitrogen dioxide is 21.15 °C, in normal ambient conditions its low partial pressure in the atmosphere (908 mmHg at 25 °C) prevents condensation so that it exists in the air in its gaseous form."

[Loose}{Cannon]

https://www.ncbi.nlm.nih.gov/books/NBK138707/
"While the boiling point of nitrogen dioxide is 21.15 °C, in normal ambient conditions its low partial pressure in the atmosphere (908 mmHg at 25 °C) prevents condensation so that it exists in the air in its gaseous form, has a sharp/shinny point on one end, has an expanding vapor trail, and flies through the air similar to a rocket."

Fixed it for ya.   

[Nigel Evans]

https://www.ncbi.nlm.nih.gov/books/NBK138707/
"While the boiling point of nitrogen dioxide is 21.15 °C, in normal ambient conditions its low partial pressure in the atmosphere (908 mmHg at 25 °C) prevents condensation so that it exists in the air in its gaseous form, has a sharp/shinny point on one end, has an expanding vapor trail, and flies through the air similar to a rocket."

Fixed it for ya.   

Ever helpful.

[Loose}{Cannon]

Humans are strange.  Fun starts at 0:30

[Nigel Evans]

I looked very hard but couldn't see a sharp shiny point..   

[Jacques-Emile]

So what?  The kinetics of condensation from NO₂ to N₂O₄ are relatively slow.  So what?  You're still invoking majick.  I do not see why you are enjoying trolling this board so much with garbage.  Please continue, I will not read your submissions.  Looking up WHO Guidelines for Indoor Air Quality for chemical kinetics is just ignorant.

If you want to find out about the kinetics N2O4 first order it is here: https://webbook.nist.gov/cgi/inchi/InChI=1S/N2O4/c3-1(4)2(5)6 and about NO2 the condensation kinetics second order are here: https://kinetics.nist.gov/kinetics/ReactionSearch?r0=10102440&r1=10102440&r2=0&r3=0&r4=0&p0=10544726&p1=0&p2=0&p3=0&p4=0&expandResults=true&
If this is still magick to you and I'm absolutely sure it is, ask a real chemist what is going on, don't go looking up crap on Internet.  This is why people think Dyatlov mystery is stupid because of absurd postings.

[Nigel Evans]

If nitrous oxide (N2O) was also a component of this plume then they could be affected by laughing gas... = https://en.wikipedia.org/wiki/Nitrous_oxide
Then you've got an explanation for a lack of judgement and collecting various injuries :-"Exposure to nitrous oxide causes short-term decreases in mental performance, audiovisual ability, and manual dexterity.^[25] These effects coupled with the induced spatial and temporal disorientation could result in physical harm to the user from environmental hazards."

[Nigel Evans]

So what?  The kinetics of condensation from NO₂ to N₂O₄ are relatively slow.  So what?  You're still invoking majick.  I do not see why you are enjoying trolling this board so much with garbage.  Please continue, I will not read your submissions.  Looking up WHO Guidelines for Indoor Air Quality for chemical kinetics is just ignorant.

If you want to find out about the kinetics N2O4 first order it is here: https://webbook.nist.gov/cgi/inchi/InChI=1S/N2O4/c3-1(4)2(5)6 and about NO2 the condensation kinetics second order are here: https://kinetics.nist.gov/kinetics/ReactionSearch?r0=10102440&r1=10102440&r2=0&r3=0&r4=0&p0=10544726&p1=0&p2=0&p3=0&p4=0&expandResults=true&
If this is still magick to you and I'm absolutely sure it is, ask a real chemist what is going on, don't go looking up crap on Internet.  This is why people think Dyatlov mystery is stupid because of absurd postings.

I welcome arguing these points with you but just throwing links at me isn't making an argument.

The plume under discussion could be above 20C (well above). Condensation is not critical path.

[sarapuk]

Re: Nitrogen dioxide slowly converts to Nitric acid on contact.  But whats the point of this theory  !  ?  It doesnt go any way to explaining the sequence of events and the various injuries on the bodies.

[Nigel Evans]

Re: Nitrogen dioxide slowly converts to Nitric acid on contact.  But whats the point of this theory  !  ?  It doesnt go any way to explaining the sequence of events and the various injuries on the bodies.

It explains :-
Why they left the tent.
Why they stood in a line some distance from the tent.
Why the area around the tent was covered in sastrugi and the hot spot.
Why the footsteps were so persistent (powder doesn't behave like that).
Why Yuri D had foam on his cheek.
Why Yuri D and Zina had dark orange faces at their funerals.Why Lyudmila had a yellow brown face but a white chin. It also provides an explanation for Chivruay.

It fits in with the electro magnetic phenomena narrative that explains the ravine injuries as from impact/crushing from ball lightning rollers - Ivanov's fire orbs.
It also gives a plausible reason (nitrous oxide) for some very bad decision making and an injury profile resulting from increased clumsiness.

[Nigel Evans]

Here's another plume. Although i think the tadpole theory is a bit wild myself. Whatever next broomsticks? Mugs of cocoa? Sharp pointy rockets?
https://www.mirror.co.uk/news/uk-news/tadpole-shaped-ufo-filmed-flying-13437661

[Loose}{Cannon]

Why the area around the tent was covered in sastrugi and the hot spot.

Wild Speculation with zero corroborating evidence. 

Why Yuri D and Zina had dark orange faces at their funerals.Why Lyudmila had a yellow brown face but a white chin

Prove it.   

[Nigel Evans]

Why the area around the tent was covered in sastrugi and the hot spot.

Wild Speculation with zero corroborating evidence. 

Why Yuri D and Zina had dark orange faces at their funerals.Why Lyudmila had a yellow brown face but a white chin

Prove it.   

Shavarin stated they had to dismount from their skis approaching the tent because the snow was too rough (and hard) to ski over? The hot spot is there for all to see. But there are none so blind as those that will not


You should try and read articles on this site they're quite informative...

https://dyatlovpass.com/funerals-1959?lid=1#12mayWitness testimony of Rimma Kolevatova given on April 14 (Case files pages 270-272).
This is before the body of her brother was found. "I was present at all the funerals of the group. Why were their faces and hands all so dark brown?
Recollection of relatives and eyewitnesses at the funeral, given almost fifty years after the tragedy, mention the dark orange color of the skin, reminiscent of the color of bricks. Though unusual, nothing of this was recorded in the official records of the autopsies. At that time, all photography was black and white, so there are no color pictures of the dead. Some say that only the exposed skin was darker in color, that the skin under their clothes what could be seen (it was Zina family member who witnessed this), was not so unnaturally colored.


N.B. no record of this was made at autopsies because the skin hadn't darkened at this point the bodies had been frozen and this would retard the nitric acid - keratin reaction which gives the dark orange brown colour.(n.b. here i'm making some assumptions, i'm not a biochemist). Compare the morgue photo of Yuri D and Zina with the funeral shots. The pathologist didn't record it because he didn't see it.

From Lyudmila's post mortem -

The skin of the face is of yellowish brown colour.
Oss, Svetlana. Don't Go There: Post Mortem (p. 215). LiberWriter.com. Kindle Edition. Again from a non biochemist  - the nitric acid had enough time to take effect including warming in the spring thaw. Note her white chin on the morgue photo, protective scarf? Chin pushed in snow at point of death resulting in dilution of NO2/nitric acid?


Q.E.D.

[Nigel Evans]

https://www.express.co.uk/news/weird/935792/ufo-invasion-sighting-alien-evidence
Forget the first video, look at the photos underneath.

[Loose}{Cannon]

Space junk.   What goes up, must come down.

[Nigel Evans]

But the young woman, who has not been named, said the object did not fly through the sky.
Instead the witness said she picked up her camera to film the object as it motionlessly chugged out the smoke before vanishing into the sky.
She told 20 Minuten: “The object with the tail just stood in the sky and it did not move for two or three minutes.”
The object then rapidly reared back into life and “turned to the right and disappeared” the witness recounted.

[Loose}{Cannon]

But the young woman, who has not been named, said the object did not fly through the sky.
Instead the witness said she picked up her camera to film the object as it motionlessly chugged out the smoke before vanishing into the sky.
She told 20 Minuten: “The object with the tail just stood in the sky and it did not move for two or three minutes.”
The object then rapidly reared back into life and “turned to the right and disappeared” the witness recounted.

Do I need to repost the vid with dumb idiots going stupid thinking the aliens are invading the planet simply because their inbreed azz cant tell the dif between a rocket and a piloted fireball?   If you believe everything crazed morons say, I have a bridge to sell you.