What do forensic scientists use a microscope for?
The microscope is used by forensic scientists to locate, isolate, identify, and compare samples. Because of its low magnification, wide field of view, large working distance, and stereoscopic vision, the stereomicroscope is used for preliminary evidence evaluations.
Which microscope is most often used in the forensic laboratory?
The stereoscopic microscope is the most frequently used and versatile microscope found in the crime laboratory. When you increase the compound microscope magnification its field of view decreases.
Which type of microscope is most useful to forensic scientists and why?
Electron microscopes provide much higher magnifications. They are of two basic types – the Transmission Electron Microscope and the Scanning Electron Microscope. The latter has a much greater depth of field than the optical microscope. This instrument is very useful for forensic purposes.
What type of microscope would a forensic scientist most likely use identifying birefringent minerals present in soil?
Polarizing microscopy is used to study birefringent materials, that is, materials that have a double refraction. Refractive index data provide information that helps identify minerals present in a soil sample or the identity of a synthetic fiber.
How are fibers analyzed by a forensic scientist?
Fibers: Trace evidence analysts often have only mere strands to work with. From these strands, fiber testing is done using high-powered comparison microscopes to compare texture and wear in a side-by-side assessment. Chemical analysis can determine the chemical composition of the fibers.
How are fibers classified forensics?
Fibers can be classified as animal (e.g. hair and silk), vegetable (e.g. cotton and linen), mineral (e.g. asbestos), or synthetic (e.g. polyester and nylon), and are often identified by sub-classification through laboratory examination.