medical detective quiz 1 finger prints

finger prints

locard’s principle

when two things touch there will be a change in material.

loops

the most common fingerprint type, only have 1 Delta.

arch

rarest fingerprint type, have no deltas.

whorls 

two deltas, look like whirlpool.

deltas

large triangle to figure out what finger print type it is.

ridgeologoy

the study of uniqueness of friction ridge structures and their use for personal identification.

minutiae

points where ridge structures change

points of identifacation

different types of points and lines to identify people’s fingerprints.

afis

automated fingerprint identafacation system

exampler prints

perfect fingerprints deliberately made from a subject.

patent prints

crime scene prints that are visible to the naked eye.

latent prints

crime scene fingerprints that are hidden to the naked eye and need a detective to discover

graphite powder

most basic method of identifying finger prints used from smashed graphite.

ninhydrin

a chemical that turns fingerprints purple

cyanoacrylate

a forensic tool that turns fingerprints(crust and white)