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PHYSICAL PROPERTIES: Glass and Soil

PHYSICAL PROPERTIES: Glass and Soil. Chapter 4. Physical Properties.

1.58k views • 49 slides

PHYSICAL PROPERTIES: Glass and Soil

PHYSICAL PROPERTIES: Glass and Soil. Chapter 4. Physical Properties.

555 views • 49 slides

Chapter 3 & 4: Glass Evidence

Chapter 3 & 4: Glass Evidence. What Is Glass?. Glass is considered a very slow moving liquid Glass is a hard, brittle, amorphous substance that is composed of silicon oxides mixed with various metal oxides. Amorphous solids have their atoms arranged randomly, unlike crystals.

1.21k views • 46 slides

Review of Optical Mineralogy GEOL 5310 Advanced Igneous and Metamorphic Petrology 9/9/09

Review of Optical Mineralogy GEOL 5310 Advanced Igneous and Metamorphic Petrology 9/9/09. Nature of Light. Visible light is a form of electromagnetic radiation , which can be characterized as pulses or waves of electrical energy Travels in straight lines with a transverse wave motion.

1.21k views • 39 slides

Forensic Geology

Forensic Geology. The legal application of earth and soil science Characterization of earthen materials that have been transferred between objects or locations and the analysis of possible origin or sources. Forensic Geologist Tools. Binocular microscopes Petrographic microscopes

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Fibers

Fibers. Are considered class evidence Have probative value Are common trace evidence at a crime scene Can be characterized based on comparison of both physical and chemical properties . Fabric. Fabric is made of fibers. Fibers are made of twisted filaments. Types of fibers and fabric:

1.26k views • 32 slides

Glass and Soil

Glass and Soil. Physical vs. Chemical Properties. Physical properties: describes substances without reference to other substances. Mass, density, color, weight, volume, boiling point, and melting point. Physical vs. Chemical Properties.

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Refractometry and Relief

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Refractometry and Relief

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Composition of Sand at Sandy Hook

Composition of Sand at Sandy Hook. What is Refractive Index? . Refractive Index (RI) is the ratio of the speed of light in a vacuum compared to the speed of light in another medium such as a mineral: RI = (Speed of Light)VACUUM/(Speed of Light)MEDIUM

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Optical Mineralogy

Optical Mineralogy. WS 2008/2009. Examinations. 1) Mid-term - December 11 @ normal time (13:30) THEORY TEST 2) Finals - February 10 (probably) PRACTICAL TEST (1 THIN SECTION). Reflection and Refraction. 1) Reflection: Angle of Incidence = Angle of Reflection

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GLASS EVIDENCE

GLASS EVIDENCE. Glass is considered microscopic evidence. Glass has many properties. It is composed of SAND (silicon oxides) SODA (sodium carbonate) LIME (calcium oxide) HARD BRITTLE AMORPHOUS random arrangement Not a crystalline substance (like diamond)

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Introduction to Light and Polarized Light

Introduction to Light and Polarized Light. Lecture 1. Definition of Light. Light is electromagnetic radiation. Light exhibits properties of both a particle (e.g., ability to travel through a vacuum) and a wave (e.g, interference and polarization)

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Glass

691 views • 18 slides

Reflected Light Microscopy Francis, 2013

gold. Reflected Light Microscopy Francis, 2013. gold. gold. arsenopyrite. Sulfide minerals and many oxides are opaque to transmitted light and can only be optically studied using reflected light.

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The Polarizing Light Microscope

The Polarizing Light Microscope. I. introduction.

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Chapter 14 Glass

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Glass Evidence: Analyzing based on Refractive Index

Glass Evidence: Analyzing based on Refractive Index. Refraction = the bending of a light wave as it passes from one medium to another Refractive Index (RI) = a comparison of the speed of light in a vacuum to the speed of light in another substance

233 views • 8 slides