CHEM 207 - Chapter #3 - Physical Evidence

CHEM 207 - Chapter #3 - Physical Evidence - Physical...

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Unformatted text preview: Physical Evidence Physical Evidence http://www.videojug.com/interview http://www.videojug.com/interview /forensic /forensic-- science science-- 2 2 P D F C r e a te d w i t h d e s k P D F T S P D F W r i te r- D E M O : : h t tp : / /w w w .d o c u d e s k . c o m Crime Scene Uniqueness Crime Scene Uniqueness No two alike Not a mechanical process, but rather dynamic Three dimensional Evidence collector required to make on the spot decisions at scene Decisions have lasting ramifications P D F C r e a te d w i t h d e s k P D F T S P D F W r i te r- D E M O : : h t tp : / /w w w .d o c u d e s k . c o m Common Physical Evidence Common Physical Evidence 1. Blood, semen, saliva 2. Documents 3. Drugs 4. Explosives 5. Fibers 6. Fingerprints 7. Firearms and ammunition P D F C r e a te d w i t h d e s k P D F T S P D F W r i te r- D E M O : : h t tp : / /w w w .d o c u d e s k . c o m 8. Glass 9. Hair 10. Impressions 11. Organs and physiological fluids 12. Paint 13. Petroleum products 14. Plastic bags 15. Plastic, rubber, other polymers P D F C r e a te d w i t h d e s k P D F T S P D F W r i te r- D E M O : : h t tp : / /w w w .d o c u d e s k . c o m 16. Powder residues 17. Serial numbers 18. Soil and minerals 19.Tool marks 20. Vehicle lights 21. Wood and other vegetative materials P D F C r e a te d w i t h d e s k P D F T S P D F W r i te r- D E M O : : h t tp : / /w w w .d o c u d e s k . c o m Significance of Physical Significance of Physical Evidence Evidence Physical evidence is usually examined for identification or comparison Locards Exchange principle P D F C r e a te d w i t h d e s k P D F T S P D F W r i te r- D E M O : : h t tp : / /w w w .d o c u d e s k . c o m Identification Identification Determine physical or chemical identity of substance with highest certainty...
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This note was uploaded on 02/03/2012 for the course CHEM 207 taught by Professor Bacon during the Fall '11 term at Ferris State.

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CHEM 207 - Chapter #3 - Physical Evidence - Physical...

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