Exam Flashcards
(34 cards)
Three things to include on a rough sketch
Compass direction
Date
Time
Address
Reference pount who dre sketch
These sheets should be reviewed prior to using any chemiclas
Safety Data Sheet
The SDS provide these information
Identification of product
Hazard identification
Composition/ information on ingredients
First aid measure
Handling and storage
Exposure control
Toxicology i formation
Why is it important for us to have knowledge of footwear manufacturing?
- To ensure that manufactured class characteristics are not overvalued as unique features.
2 knowledge of manufactured class characteristics may assist in excluding a shoe - Courts may put more weight on your credentials and testimony if you demonstrate knowledge of of manufacturing process
Three types of outsole manufacturing
Compression molding
Injection molding
Open pour molding
During analysis your are looking at four things
Size, shape orientation and location
Why important to know how footwear is maufactured
- Credibility in court
- Used to exclude
- So you know they are not unique features
Best method for footwear 3D impression
Biofoam
When comparing physical evidence
- Look for both differences and similarities of both and weight the value of both
- Compare unknown to know
- Compare like to like
What are the five footwear conclusion
Inconclusive
Exclusion
Identification
Higher degree ofassociation
Association of class characteristics
During evaluation in footwear
Class and wear should not be used to idnetify but can be used to exclude . Wheres RAC’s can be used to both identify and exclude
What are we looking for class characteristics during comparison
- Tread pattern
- Size
- Shape
Components of a tire tread
Wear bar
Groove
Rib
Rib elements
Sipes
What are the 3 tire measurements we are i interested in at a scene
Wheel base
Front track width
Rear track width
Bloodstain pattern are?
Predictable
Reproducible
Bloodstain enhancement tool
Amino black
ALcV
Hungarian red
Bloodstain search tool
Luminol
Bluestar
Samples to be submitted to lab
Biology and toxicology
3 things we are looking when taking photos fingerprint
Depth of field
Exposure
Fill the frame
Tire pattern that reduce the sound of rolling tire
Noise treatment
4 conclusions when comparing 2 broken pieces
Identification
Exclusion
Inconclusive
Similar to
What are the 4 premises
Friction ridges are form on fetus prior birth
Friction ridges persistent throughout out life except permanent scareing
Friction patters are unique and never repeated
Friction ridges pattern develop within limits
3 dye stain
Brilliant yellow- 450-484
Rhodamine 6G- 505 -535
Ardox- UV
Laser stand for
Lights amplification by stimulated emission of radiation
