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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Needed Energy for killing.... is it a myth??
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<blockquote data-quote="devildoc" data-source="post: 200910" data-attributes="member: 5615"><p>Similarly, someone who knows alot about energy and little to nothing about gunshot wounds in living tissue as well as anatomy, physiology and a plethora of other fields, can draw incorrect conclusions due to their lack of technical knowledge in those areas. Difference is, MD's have to go through a minimum of two semesters of college physics, an engineering student doesn't have to go through A&P, Cellular Biology, Molecular biology etc.</p><p>Of course Kinetic energy is not conserved, it rarely is, but total energy is always conserved. Now the difference between the kinetic energy of a bullet when it entered the system (body) and when it exited was in fact imparted to the system. Some of it will undoubtedly be trasformed to frictional heat between the bullet and the medium, however I don't imagine a great proportion of it is, alot of the energy of the bullet has to do work (kinetic energy) now that work energy may eventually transform into heat, elastic and potential energy. But it's going to do work first. That work may not be directly proportional to the energy imparted to the system but it will be proportional. As to whether trauma increases in a quantum or graded way is a different ball of wax, But at some level, more energy imparted to the system is going to cause more trauma. </p><p></p><p>As for your examples, muzzle energy has nothing to do with it, and hard cast bullets are a poor model for a controlled expansion hunting bullet. What matters is energy lost to the system (body), and when talking about a expanding projectile that will loose a great deal of energy as it traverses the body, kinetic energy will be proportional to trauma to some extent.</p></blockquote><p></p>
[QUOTE="devildoc, post: 200910, member: 5615"] Similarly, someone who knows alot about energy and little to nothing about gunshot wounds in living tissue as well as anatomy, physiology and a plethora of other fields, can draw incorrect conclusions due to their lack of technical knowledge in those areas. Difference is, MD's have to go through a minimum of two semesters of college physics, an engineering student doesn't have to go through A&P, Cellular Biology, Molecular biology etc. Of course Kinetic energy is not conserved, it rarely is, but total energy is always conserved. Now the difference between the kinetic energy of a bullet when it entered the system (body) and when it exited was in fact imparted to the system. Some of it will undoubtedly be trasformed to frictional heat between the bullet and the medium, however I don't imagine a great proportion of it is, alot of the energy of the bullet has to do work (kinetic energy) now that work energy may eventually transform into heat, elastic and potential energy. But it's going to do work first. That work may not be directly proportional to the energy imparted to the system but it will be proportional. As to whether trauma increases in a quantum or graded way is a different ball of wax, But at some level, more energy imparted to the system is going to cause more trauma. As for your examples, muzzle energy has nothing to do with it, and hard cast bullets are a poor model for a controlled expansion hunting bullet. What matters is energy lost to the system (body), and when talking about a expanding projectile that will loose a great deal of energy as it traverses the body, kinetic energy will be proportional to trauma to some extent. [/QUOTE]
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Needed Energy for killing.... is it a myth??
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