Unit 4 - Fingerprints Flashcards
What are the three properties of a fingerprint?
- Unique ridges
- Consistent over an individual’s lifetime
- Systematic classification used for fingerprints
What are the characteristics of a loop fingerprint?
Enters and exits from the same side, contains a delta and core
What are the characteristics of a whorl fingerprint?
At least 2 deltas and a core
What are the characteristics of an arch fingerprint?
Enters from one side and exits through the other, does not contain a delta or core
What is a delta?
Triangular area
Fingerprint that enters and exits towards the thumb
Radial loop
Fingerprint that enters and exits towards the pinky
Ulnar loop
Whorl fingerprint that has a ripple effect
Plain
Whorl fingerprint that resembles a spoon
Central pocket
Whorl fingerprint that resembles an s
Double
Latent print and one example
Invisible - bodily fluids and perspiration
Visible print and example
Touched colored material - blood
Plastic print and example
Indented/molded - paint, soap, wax
Who started the study of fingerprints?
William Herschel
What is a fingerprint?
An imprint made by ridge patterns on the tip of a finger