6.2 Fibres: Nature, Types and Importance

The nature: the textile's traces — the fabric contacts' transfer. The types: the natural (the cotton, wool, silk) vs the synthetic (the polyester, nylon, acrylic); the manufactured's generic-and- brand faces. The importance: the contact's proof (the fibre from the suspect's clothes at the scene — and the reverse); the reconstruction (the struggle's-and-transport's fibres). Theexamination: the microscopy (the morphology, the cross-section, the delustrant); the chemical (the solubility, the melting point); the colour's comparison (the microspectrophotometry — the dye's match); the class-evidence's character (the fibres' population-frequency questions).