[MOVSM]

(10-25-2017 01:58 AM)Paracelsus Wrote:  

(10-24-2017 10:10 AM)MOVSM Wrote:  

(10-24-2017 09:36 AM)Chris Brown Wrote:  

What about the bullet that hit Jfk from the front? How did Oswald do tat from the repository?

That was Oswald's bullet exiting. Exit wounds are always larger and ghastlier than entry wounds.

Well, apart from the "magic bullet" -- CE399 -- which passes through two human bodies, those of JFK and Governor Connolly, without leaving larger, ghastlier exit wounds in either of them and without basically shattering into tiny pieces as it did. Indeed it was a canard of Lattimer's examination that Kennedy's throat wound -- the magic bullet's exit wound -- was smaller than what he said was the entry wound.



The same gun less than 8 seconds later then fired a bullet that blew the right side of JFK's head apart.

The reason this is not physically possible is because you have a disparity in the results despite the fact the bullets were hitting at pretty close to the same obliquity to the target surface.

I'm being generous here and assuming CE399, the magic bullet that hits Kennedy and passes into Connolly's wrist, was actually fired that day. That result is at least within the bounds of physical possibility because bullets hold together pretty well if they hit their targets at low obliquity, i.e. close to perpendicular. The easiest analogy for this is to consider a cliff diver plunging into the water off a high dive: they work on hitting the water at low obliquity, i.e. 90 degrees, i.e.e. perpendicular, because it maximises shear force from their fingers and allows a minimal splash when they hit. A bullet hitting does similar things on a perpendicular impact: if it hits perpendicular, shear force is maximised and you don't have to spend a lot of momentum penetrating the target. The converse applies if the cliff diver hits the water off-perpendicular, that is, at medium to high obliquity: there's a big splash, most of the momentum is spent across the full surface of the cliff diver hitting the water, and they don't penetrate into the depths anywhere as far.

Bullets are similarly affected when they hit a target even slightly side-on: the bullet starts to tumble easier and breaks up more completely, because the force of impact works on the bullet as well, consequent on Newton's Third Law. Significant damage is done to a bullet that hits at 25-40 degrees oblique to the target. In the case of bullets hitting at the 40 to 60 degree obliquity, the bullet is all but destroyed, shattered.

Simple Pythagorean calculations from the position of JFK's limo and the Texas Book Depository informs us that Oswald could not have fired a shot that possibly hit at 60 degree obliquity: especially with JFK crumpling over in his seat, about the maximum obliquity he could have hit at was around the 20 to 30 degree mark. That is, the sort of obliquity that promotes if not compels a straight-line penetration and smaller exit wound, as happened with the "magic bullet".

The HSCA (House Select Committee on Assassinations in 1979) believed the bullet hit around the middle of the back of JFK's skull and went in a slightly downward direction. Even then they screwed it up: based on the HSCA's calculations, the shooter was floating in mid-air above the Texas Book Depository. The corrected calculations reckon the bullet to have hit at about 25 to 30 degrees oblique to the target. This is not compatible in physics with a blowout of the variety that happened to JFK's head. However, it is compatible with impact at 60 degrees oblique to the target ... and among the places from where you could achieve such obliquity is the grassy knoll.

I know people will say "But Edgewood Arsenal simulated the head explosion 10 times for the Warren Commission."

Let's leave aside all the physical differences between the simulation and real life (dried out skulls, no scalp, ballistic gel instead of brains, etc), the simple fact is that the Edgewood Arsenal simulations were invalid because they were working with a wrong presumption: they were simulating a bullet hit at the base of the skull rising slightly up to blow out above JFK's head. As the HSCA later established, the impact point was in reality good four inches higher, on a different bone of the skull entirely. The Warren Commission assumed JFK was bent over much further than he actually was.

This has very large implications for the test because it changes the obliquity at which the bullet hit, and therefore the results. Edgewood Arsenal's tests perfectly simulated a blowout every time because they were simulating a hit at high obliquity to the target, 60 degrees or so. Per the HSCA's own calculation (11 degrees, which was impossible, or up to 27 degrees on recalculation) this simply did not happen - if the bullet was coming from Oswald.

The bullet *was* deformed: