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Questions and Answers
What is the primary focus of forensic instrumentation?
What is the primary focus of forensic instrumentation?
- Analyzing DNA evidence in criminal investigations
- Studying the behavior of insects in crime scenes
- Identifying the chemical composition of matter in forensic cases (correct)
- Determining the physical properties of samples
Which method provides numerical information about the relative amount of components in a sample?
Which method provides numerical information about the relative amount of components in a sample?
- Physical Method
- Quantitative Method (correct)
- Qualitative Method
- Analytical Method
Why is knowledge of measurement principles essential in forensic instrumentation?
Why is knowledge of measurement principles essential in forensic instrumentation?
- To understand the behavior of suspects
- For conducting psychological evaluations
- For efficient use of measurement tools (correct)
- To perform DNA analysis
During classical methods of analysis, how were components of interest separated from a sample?
During classical methods of analysis, how were components of interest separated from a sample?
What is the principal purpose of any microscope?
What is the principal purpose of any microscope?
Which type of microscopy is specifically used for drug identification?
Which type of microscopy is specifically used for drug identification?
What is the purpose of an Analytical Balance in a forensic instrumentation lab?
What is the purpose of an Analytical Balance in a forensic instrumentation lab?
What is the difference between accuracy and precision when using an Analytical Balance?
What is the difference between accuracy and precision when using an Analytical Balance?
What is the primary purpose of a forensic microscope according to the text?
What is the primary purpose of a forensic microscope according to the text?
Which feature of a forensic microscope helps in comparing collected proofs in crime investigations?
Which feature of a forensic microscope helps in comparing collected proofs in crime investigations?
How does the concept of 'dispersion' relate to forensic microscopy?
How does the concept of 'dispersion' relate to forensic microscopy?
Which type of microscope is mainly used by forensic science experts according to the text?
Which type of microscope is mainly used by forensic science experts according to the text?
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Study Notes
Forensic Instrumentation
- Primary focus: analyzing evidence from crime scenes to aid in investigations and convictions
Separation of Components
- Classical methods: components of interest separated from a sample through techniques such as filtration, centrifugation, and chromatography
Microscopy
- Principal purpose: magnify and observe samples to gather detailed information
- Type used for drug identification: polarized light microscopy
- Feature helping in comparing collected proofs in crime investigations: comparison microscopy
Analytical Balance
- Purpose: measure mass of samples accurately and precisely
- Difference between accuracy and precision:
- Accuracy: how close a measurement is to the true value
- Precision: how close measurements are to each other
Forensic Microscope
- Primary purpose: examine and compare evidence found at crime scenes
- Type mainly used by forensic science experts: comparison microscope
Dispersion
- Relates to forensic microscopy: refers to the spreading of light as it passes through a sample, helping to identify materials
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