forensics, physical evidence

Value of trace forensic recongnized

Edmund locard in 1910

Glass 3 characteristics

Thickness, chemical composition, colour

Matching bombs to suspect

Matching traces to clothings, hair or other objects

GSR

Gunshot residue

Rifling

Grooves in a gun barrel causes by grooves, scratches

IBIS

Integrated ballistic indentification system

Dust investigation

Travel and if something has been picked

Wound characteristics suspect

Gaucher/droitier, victims and suspects position

Documents matching

Ink watermarks indentation

Insects helpful

Flies beetles

Pmi

Time between death and discovery

Codis

Combined dna index system

Skeletal remains determined

Age sex race stature

Forensic studies skeletal remains

Anthropologist

Vomit

Alcohol and drugs

Blood

DNA and spatter=physical clues

Hair sample for dna test must remain

Intact root

Individualization

Can be directly linked to a specific person or source

Identification/class

can be grounded into a class of items having similar properties