hair fibre p2 and footprrints Flashcards
Shoe print analysis can help determine
the size of the
shoe, in turn to estimate the height of the suspect
how is the weight of an individual estimated
3D impressions of shoe prints
types of shoe prints (classifications)
latent
patent
plastic impressions
how do scientists determine who was present at the crime
Tyre tracks leaving or entering the
crime scene
differnce in tyre tracks
age
tyre type
car type
tyre alignment
tyre marks
brand
Scientists can also look at and compare all four tyres as
tracks may not
be the same for each tyre, providing a unique
profile for a specific car.
Tyre marks can be
2D marks, such as skid marks across a
road during a hit and run, or 3D impressions, such as when
a car travels through mud or snow.
how are 2d/3d tyre marked examined
through searchable databases
from different tyre manufacturers to help narrow down the
type of vehicle used.
Hair from the scalp
tends to have a circular cross-section
often spilt ends
beard hair
often has a more triangular cross-section.
Eyebrows and eyelashes hair
circular cross-section, but their ends are tapere
underam hair
has more oval cross-section than the other types.
underam hair
has more oval cross-section than the other types.
pubic hair
often short, curly, and stiff, with an oval or triangular cross-section and short roots
General body hair
finer and softer than pubic hair but is also curly and either triangular or oval in cross-section.
