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Evidence & Microscopes ,

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Evidence and Microscopes
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The application of microscopy in the field of forensic sciences is limitless. This has resulted in microscopes becoming nearly indispensable in entire forensic disciplines that involve natural sciences. Thus, a firearms specialist comparing a bullet, a specialist in trace identifying and comparing hairs, fibers, dust or soils, a serologist scrutinizing bloodstain and more all depend on microscopes even if they are used for different purposes and different ways. However, the core principal of the microscope is to enlarge images of smaller objects. (Bloss, 2009) Gives the case of exemplary bullet from the crime scene, the forensic analyst after receiving the spacemen he first establishes the brushes and similar particulars if exist on both crime bullet and the exemplary one by microscopically comparing the two. This could establish if the two bullets originated from the same gun under investigation.
(Rochow & Tucker, 1994) Have explained a variety of microscopes that are used in modern forensic science. To begin with Stereoscopic microscope, this is a simplest kind of microscope both in terms of construction and its use. It contains two compound microscopes that are aligned side by side at a correct angle of the visual which provides a real stereoscopical image. The choice of the microscope works well in preliminary examinations and preparing small particles for further analysis with powerful instruments.

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With its long working distance and illumination, spacemen can be placed direct for observation without preparation. Additionally the boom stand could be important as it can handle large objects such as clothing and debris. With the use of a microscope, even the least experienced individuals in the laboratory can handle it.
Second, we have the compound microscope that represents in step up the resolution, magnification and difficult in use compared with the Stereoscopic microscope. The observations here in a forensic science laboratory are done by transmitted light that places limitations to the spacemen. The microscope is limited to studies of tool marks bullets and confined to polished and grinded materials. Under this class identifications and comparison can be done with a different variety of compound microscopes.
The polarizing microscope is known for more versatile and useful in the hands of experienced and trained forensic microscopist. It permits measurements and observations in a plane polarized light as well as between crossed polars. The microscope can perform all duties since it provides both quantitative and qualitative which is usually valuable in observing, comparing and identifying microscopic crystals, particles, and fibers. Two polarizers that are inserted below and above the specimen are the distinct component of other type of the compound microscope.
References
Bloss, W. P. (2009). Under a Watchful Eye: Privacy Rights and Criminal Justice. ABC-CLIO.Rochow, T. G., & Tucker, P. A. (1994). Introduction to microscopy by means of light, electrons,
X-rays, or acoustics. Springer Science & Business Media.

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