Area Approach
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Single team handles all activities in the area
Types of Physical Evidence
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Direct Evidence & Circumstantial Evidence
Observation
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Always intrusive
Precede photography & close up photography & special techniques = last
action taken
CANNOT move items
Sequencing
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Help CSI decide what order the crime occurred
Scene Boundaries
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Reassess once CSIs get there
Training/experience, scene stability, and available lighting allow for more
effective assessment
Outer boundary needs most security effort since outside perimeter is
unsecured & uncontrolled
1 strong boundary > 3 weak boundaries
Close Up Photos
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, Do NOT define condition of scene
Justice
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Defined by society in the form of judges and juries
ID Possible Weapons from Projectile
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Use caliber, number/size/twist of lands and grooves present
Hair & Fiber Documentation and Collection
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Should occur immediately upon discovery
Most common method - taping & vacuuming
Evidence
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, Something legally submitted to a competent trier of fact as a means of
ascertaining the truth
Proves or disproves fact in contention
Trace Analysis of Fibers
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Typically class characteristics, but can lead to individualization
Scene Assessment
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Ongoing process that begins the processing task and defines what
procedures will be employed
Comparing Bullets
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There are no lines parallel of the lands/grooves
Paint Sample Analyzing
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Give this one a try later!
Single team handles all activities in the area
Types of Physical Evidence
Give this one a try later!
Direct Evidence & Circumstantial Evidence
Observation
,Give this one a try later!
Always intrusive
Precede photography & close up photography & special techniques = last
action taken
CANNOT move items
Sequencing
Give this one a try later!
Help CSI decide what order the crime occurred
Scene Boundaries
Give this one a try later!
Reassess once CSIs get there
Training/experience, scene stability, and available lighting allow for more
effective assessment
Outer boundary needs most security effort since outside perimeter is
unsecured & uncontrolled
1 strong boundary > 3 weak boundaries
Close Up Photos
Give this one a try later!
, Do NOT define condition of scene
Justice
Give this one a try later!
Defined by society in the form of judges and juries
ID Possible Weapons from Projectile
Give this one a try later!
Use caliber, number/size/twist of lands and grooves present
Hair & Fiber Documentation and Collection
Give this one a try later!
Should occur immediately upon discovery
Most common method - taping & vacuuming
Evidence
Give this one a try later!
, Something legally submitted to a competent trier of fact as a means of
ascertaining the truth
Proves or disproves fact in contention
Trace Analysis of Fibers
Give this one a try later!
Typically class characteristics, but can lead to individualization
Scene Assessment
Give this one a try later!
Ongoing process that begins the processing task and defines what
procedures will be employed
Comparing Bullets
Give this one a try later!
There are no lines parallel of the lands/grooves
Paint Sample Analyzing
Give this one a try later!
