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forensics ch. 6
| Term | Definition |
|---|---|
| arch | fingerprint pattern in which the ridge patterns originates from one side of the print and leaves from the other |
| core | center of a loop or whorl |
| delta | triangular ridge pattern with ridges that go in different directions above and below a triangle |
| fingerprint | an impression left on any surface that consists of patterns made by the ridges on a finger |
| latent fingerprint | a hidden fingerprint made visible through the use of powders or other techniques |
| loop | a fingerprint pattern in which the ridge pattern flows inward and returns in the direction of the origin |
| minutiae | combination of details in the shapes and positions of ridges in fingerprints that make each unique, also called ridge characteristics |
| patent fingerprint | visible fingerprint that happens when fingers with blood, ink, or some other substance on them touch a surface and transfer the pattern of their fingerprint to that surface |
| plastic fingerprint | a three dimensional impression cast in soft materials such as clay, soap, or putty |
| ridge pattern | recognizable patterns of the ridges found in the end joints of fingers that form lines on the surface of objects in a fingerprint, they fall into 3 categories; arches, loops and whorls |
| ten card | a form used to record and preserve a person's fingerprints |
| whorl | fingerprint pattern that resembles a bull's eye |
| fork | bifurication |
| spur | hook |
| IAFIS or AFIS | provides digital, automated fingerprint searches, latent searches, electronic storage of files and electronic exchange of fingerprints and test results |
| 4 chemical methods used for visualizing latent fingerprints | Ninhydrin, cyanoacrylate vapor, silver nitrate, Iodine fuming |