How do you check charred documents?
Visual Methods[20] Reflectivity Method: The simplest and yet one of the most versatile decipherment procedures is that in which burnt documents are examined by a controlled light source directed at various angles relative to the paper surface.
How can you retrieve charred documents?
Charred documents found singly should be handled with the greatest of care. Flat bladed tweezers are particularly useful for picking up these fragments. When only parts of whole documents are found, they may be segregated according to the area of container in which they are found .
What is charred method?
Charring is a chemical process of incomplete combustion of certain solids when subjected to high heat. By the action of heat, charring removes hydrogen and oxygen from the solid, so that the remaining char is composed primarily of carbon.
What is the difference between a collected sample and a requested sample?
Requested specimens are writings dictated by the investigator to the writer. These specimens are created under carefully controlled conditions, with the writer being closely monitored. Collected writing specimens, however, are writings that were completed by the subject prior to the investigation.
What is erasure forensics?
erasure. the removal of writing, typewriting, or printing from a document, normally accomplished by eighter chemical means or an abrasive instrument. exemplar. n. A model, pattern, or original to be copied or imitated.
What are the characteristics of individualized handwriting?
Individual Characteristics
- Skill Level.
- Slant or Inclination.
- Slant refers to the angle of inclination of writing or a letter of writing from the base line of that writing.
- Form.
- Movement.
- Proportions.
- Proportions generally refers to the symmetry of an individual letter.
- Height Ratios.
What is the common characteristics of handwriting?
Few characteristics of handwriting are Line quality, Alignment, Size, Spacing, Connecting strokes, Pen lifts, Pen pressure and Slant [2].