Glass Forensics

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Questions and Answers

What is the purpose of document examination?

  • To create official papers
  • To alter the origin of documents
  • To mark documents for identification
  • To provide evidence about suspicious or questioned documents (correct)

What type of glass breaks into small pieces without sharp edges?

  • Tempered glass (correct)
  • Laminated glass
  • Polished glass
  • Safety glass

What is a document?

  • A paper used for wrapping gifts
  • An official paper used for proof or information (correct)
  • An unofficial paper used for information
  • A paper used for decoration

What is the purpose of document examination?

<p>To provide evidence about suspicious or questioned documents (B)</p> Signup and view all the answers

What are the types of ink used in document examination?

<p>Nigrosine, carbon, and ballpoint pen ink (D)</p> Signup and view all the answers

Which test is NOT used to determine glass composition and properties?

<p>Magnetic field analysis (B)</p> Signup and view all the answers

How can watermarks and wire marks be identified?

<p>Through UV light (D)</p> Signup and view all the answers

What type of fractures are often incomplete on safety glass?

<p>Radial and concentric cracks (A)</p> Signup and view all the answers

How should documents be handled?

<p>Handled with care and not marked (D)</p> Signup and view all the answers

What are the types of tests for paper?

<p>Preliminary, physical, and chemical tests (D)</p> Signup and view all the answers

What is the composition of paper?

<p>Loading, sizing, and loading materials (B)</p> Signup and view all the answers

How can watermarks and wire marks be identified?

<p>Through UV light (D)</p> Signup and view all the answers

What is document examination used to determine?

<p>Alterations, forgery, origin, and authenticity of documents (C)</p> Signup and view all the answers

What are the types of ink discussed in the text?

<p>Gallotannic, logwood, nigrosine, carbon, colored writing, and ballpoint pen ink (A)</p> Signup and view all the answers

How should documents be handled?

<p>Not marked and handled with care (A)</p> Signup and view all the answers

How can ballpoint pen ink be identified?

<p>Through paper chromatography (C)</p> Signup and view all the answers

What are the tests for paper?

<p>Preliminary, physical, and chemical tests (B)</p> Signup and view all the answers

How can ballpoint pen ink be identified?

<p>Through paper chromatography (B)</p> Signup and view all the answers

What are the components of paper composition?

<p>Loading, sizing, and loading materials (A)</p> Signup and view all the answers

What problems can be encountered in document examination?

<p>Determining paper composition and age (A)</p> Signup and view all the answers

What are the problems encountered in document examination?

<p>Determining paper composition and age (D)</p> Signup and view all the answers

What is a document?

<p>An official paper used as proof or for information (B)</p> Signup and view all the answers

What is document examination used for?

<p>To determine alterations, forgery, origin, and authenticity (A)</p> Signup and view all the answers

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Study Notes

  • The order of bullet impact on a window pane can determine the aggressor.
  • Fractures on safety glass are often incomplete, with radial and concentric cracks not extending fully.
  • Laminated glass does not shatter and cracks may also be incomplete.
  • Tempered glass breaks into small pieces without sharp edges.
  • Fluorescence, spectrographic, X-ray diffraction, density, and polish marks analysis are all tests used to determine glass composition and properties.

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