Why do zone fights have to be so derrogatory nowadays? Call it characteization or whatever but there is really no need to talk down an opponent in the middle of a post.
Why do people have to argue so much about physics in a game that's based off a world where people can lift massive boulders, leap many meters in a single bound, and shoot lightning from their hands?
In short, because the only difference in the world's physical mechanics is how the living creatures of the world are able to utilize energy to manipulate the world around them. The difference is not so great that physics doesn't apply period. Normal lightning still moves near the speed of light, Raiton is just slower because the cause (chakra) is slower than real life cause of electron movement.
http://www.dailymail.co.uk/sciencetech/article-2636010/How-fire-EXPLOSION-Scientists-test-method-wildfires-stopped-tracks-explosives.htmlA conventional fire can be put out with explosions, snuffing it with a cap or glass, etc.
A Narutoverse flame can be put out with close to the same thing.
Now, here's the jist of what is described here:
the gravitational field was applied --
> (1h36m) <未来> Prosvetlen ❖ Tobias to everything on her person, including her little phoenix. Assuming he was successful in this (which he should have been considering it was instant), he would close his hand into a fist, causing the forces applied to the woman's body to increase exponentially. This would culminate in --
> (1h36m) <未来> Prosvetlen ❖ Tobias everything within the field collapsing in on a single point, creating a perfectly spherical collection of flesh, bone, and everything else so unfortunate as to be caught within it.
Gravity is used to compress a space around Masane. Masane converts herself into fire in order to prevent being crushed, which is fine in an instantaneous moment of time because all three parts of a fire: oxygen, heat, and fuel (chakra) are all in one place still.
However, given a certain amount of time, that held in place space is going to run out of oxygen (heat will increase because a decrease in volume and dramatic increase in pressure and her fuel, chakra, remains intact even if drained) presuming that the gravity is keeping oxygen away from the flames.
But is the gravitational field keeping oxygen from the flames though? Probably not: if the area of affect of the gravity is spherical and it collapses inward with increasing strength (but not enough to create a black hole) then the surrounding gas would merely fill in the space. It is unlikely then that the flames will be completely cut off from oxygen, and so the fire would continue burning in some capacity.
The only thing that is important here is that the fire still has oxygen, still has a fuel source, and is still hot, all three of which are true. The fire would only go out completely if it were separated from the surrounding air. If the incineration technique literally turns one's body into fire, then Masane's fire body would be compressed and maybe burn more brightly, but it would not be extinguished. If you compressed a member of the Hozuki clan into a small jar, presuming you could fit the entire liquid into the container, you would not kill them from the compression alone. Similar concept here.
In addition to this, bringing up how gravity affects the shape of flames on earth is a red herring because earth's gravitational field pulls the flame and surrounding air in on direction: downward; whereas my technique is compressing it from every direction. Meaning the GAS that makes up the FLAMES that make up YOUR body, are compressed in the same manner as your human body, your susano'o and the molecules surrounding you that are caught in this gravitational field. You died. It's no big deal.
The human body is misshapen and fails to function entirely when crushed. Gas does not have that fatality to it and can expand back out again without permanent deformation. No, Masane should not be dead, and your own understanding of the science is overwhelming your sense of why the incineration and similar techniques were created in the first place: to avoid physical injury to the body, which this gravitational compress technique most certainly is the way it is written.
The only way to kill her like this would be to keep her in that ball until she runs out of chakra. If she leaves the transformation, then she is dead.
She darted away from the area moving to circle him again as her small bird was crushed beneath the massive force generated.
This though is not going to happen. Masane, you can't leave the gravitational field all willy nilly. That's like walking out of a chubaku tensei that you happen to be the epicenter of. As earlier stated, gravity would keep you in place even if it wouldn't immediately kill you. You would need to use space-time ninjutsu to escape the ball of gravity, not just phase through it.