VII Flashcards
(41 cards)
The unrecognized inventor of gunpowder
Wu ching tsun
An English monk and scientist, credited with the invention of gunpowder (blackpowder).
During his writings he is the one who gave the formula of gunpowder which are the charcoal, sulfur and potassium nitrate
Roger Bacon
A German monk was credited for the application of gunpowder for propelling missile.
Constantine Anklitzen (a.k.a Berthold Schwartz
He invented smokeless gunpowder with nitrocellulose, a sigle - base propellant called “Poudre B”
Paul Marie Eugene Vieille or Paul Vieille
He developed smokeless gunpowder called “Ballistite”, a double-base propellant.
Alfred E. Nobel
They obtained a patent of modified form of smokeless gunpowder known as “Cordite”, this is another term that is being used for powder charge.
Sir Frederick Abel and James Dewar
the Year when Dr. Gonzalo Iturrioz a chemist was the 1st to use Paraffin Wax to collect propellant residue. Before was called “Iturrioz Test” but popularly called as “Paraffin Test”.
1914
he performed a modified version of the Iturriuz test using molten paraffin wax on the hands of firer. In 1933, he made a demonstrated the use o paraffin cast in Criminal Identification Laboratory of Mexico, USA which was called
Theodoro Gonzales
It is also called as blasting agents and insensitive to shock.
Tertiary explosives
This explosive is insensitive to shock, friction and heat because there is a need to expose them to heat or flame to boost their power, like dynamite (developed by Alfred Nobel), TNT, RDX, PETN and HMX.
secondary explosives
This explosive us extremely sensitive to chemical shock, friction and heat such as Fulminate Mercury, Lead Styphnate and Lead Azide.
Primary explosives
It is also known as double-base powder.
High explosive
This are normally employed as propellants for guns. Undergo deflagration from few centimeters per second to approximately 400m per second.
low explosive
The chemical used to indicate the presence of nitrocellulose.
Lunge reagent
It both detects nitrates same with Greiss test
Marshall and tiwari test
It detects Nitrites.
Greiss test
It detects presence of nitrates in unburned or partially burned gunpowder, this is also used by the investigator to detect the Range.
walker test
It detects presence of Lead Styphnate (Pb).
Sodium Rhodizonate test
It detects the presence of nitrates and nitrites.
Diphenylamine test
It is used in the analysis of inorganic materials in primer residue such as Barium (Ba) and Antimony (Sb)
Graphite Furnace Atomic Absorption Spectroscopy (GFAAS)
Mass Spectroscopy Plasma (ICP-MSP) - The most efficient method employed in the analysis of GSR, computerized.
Inductively Coupled Plasma
is the most important consideration in dealing with GSR evidence.
Time factor
It is with the utilization of Scanning Electron Microscope (SEM) analysis.
Adhesive stubs
It is with the use of cotton with 5% Nitric Acid Solution that particles maybe collected
Cotton swabs
