Introduction to forensic science

Forensic science is the use of science to investigate legal matters.

Analyzing eviedence

When a crime is comitted some kind o evidence will always be produced.

Testifying in court

An expert witness is someone who has education , traing or significant experince

identity

the first meaning involves the question|"what is it?"

The second meaning involves the question "whose is it?"

Forensic scientist do more than investigate crime scene

identify victims of accidents and disasters

verify documents and products

investigate fires for clues about arson

forensic scientists must have good communication skills

tools used by forensic scientist are

chamicals , micrscopes , chromatographs , spectrometer , computers

Organizing information

There are many chemicals used by forensic scientists

some chemicals reveal bloodstains

other chemicals detect finger prints

other chemicals can detct gunshot residue

forensic scientist use chemistry to analyze :

drugs , alchohol , poisons , fire accelerants and explosive

Tools in forensic science is the micrscope

handheld lenses can be used at crime scenes

lights micrscope are used to examine eveidnce and to seperate evidence for further analysis.

SEM are used to take a picture very small objects.

Comparison micrscopes are used compare two small objects such as bullets , side by side

Identifying substances

chromotgraph

seperated chemicals based on their physical properties such as boiling point or molecular size

spectrometer

records how a substance interacts with wavelength of electromagnetic radiation

orgnizing information

Computers link to micrscopes , chromotograph and spectrometers to display results.

Databases store information that forensic scientists can search easily