Lecture 1: Fire Analysis Flashcards
What is Forensic Science
application of science to law
what is science
the systematic organization of information on a topic
to be accepted in court evidence has to be:
testable and validated through founded science theories
NAS 2009 Report
stated that forensic science is questionable and lacks peer reviewed papers
SWG is:
scientific working groups that provided standards is doesnt exist now
NIST & OSAC
it is the modern equivalent of SWG that is funded by the government proving standards and resources for the forensics community
OSAC process
1 Terminology
2 Validation standards
3 Quality Standards
4 Collection & Storage
5 Notes Reports and Testimony Standards
Ballistics
study of an objects flight study of firearms
hand gun
one handed gun (ie revolver, semiautomatic)
Why is it important to keep up with firearm news
It can help you identify new weapons and modifying weapons trends
revolvers
revolving cylinder, swings out to load & unload, cocks hammer as it revolves
semi-automatic
magazine with spring loaded bullets, one bullet per trigger
squib round
where the bullet gets stuck within the barrel and could possibly explode
single action
hammer is cocked each time
double action
the gun will cock itself
rilfes
one bullet per trigger, expel cartridge, reload, cock
why do squib rounds happen
there might not have been enough gun powder in homemade bullets
bolt action rifles uses _____ to cock and unload
a lever
semi-automatic rifle
when firing expels cartridge
automatic
machine gun
shot gun
smooth barrel, can fire shots or slugs
what is choke
when the end of the barrel gets smaller to get less range
diameter is gauge which is measured by
number of lead ball that will amount to the weight of 1 lead ball that is the diameter of the gun
what is rifling
spiraling on the inside of the barrel it is a class characteristics
