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Forensic Unit 3 review fibers pt 2

Horizontales
a fully biodegradable thermoplastic polymer consisting of renewable raw materials
The examination of minute objects by means of a microscope
Fiber evidence in court cases can be used to connect the suspect to the victim or to the crime scene. In the case of Wayne Williams, fibers weighed heavily on the outcome of the case. Williams was convicted in 1982 based on carpet fibers that were found in his home, car and on several murder victims.
most widely used man-made fiber
cellulose chemically-altered to create an entirely new compound not found in nature.
a manufactured mineral fiber
provides warmth from a lightweight, soft and resilient fiber
Verticales
Insect fiber that is spun by a silk worm to make its cocoon; fiber reflects light and has insulating properties
The warp yarn is passed over one to three weft yarns before going under one Makes a diagonal weave pattern Design resembles stair steps Denim is one of the most common examples
measuring the bending of light as it passes from air into a solid or liquid
Fourier Transform Infrared analysis (FTIR)—based on selective absorption of wavelengths of light
gently heating to break down the fiber to the basic monomers
a natural fiber that has been used in fire-resistant substances
observation of how a fiber burns, the odor, color of flame, smoke and the appearance of the residue
Fabric is made of fibers. Fibers are made of twisted filaments