What is Forensic Science and how police solve a crime

1. FORENSIC SCIENCE
Gabriela Rosales
Reading I

2. Forensic is similar to a crime investigation. It
is an idea of what happened from an initial
assessment of the scene: evidence,
interviews, and research to find clues.
Forensic science may prove the existence of
a crime, the perpetrator of a crime, or a
connection to a crime through the:
• Examination of physical evidence
• Administration of tests
• Interpretation of data
• Clear and concise reporting
• Truthful testimony of a forensic scientist

4. 1. Police: Who arrive first to
the crime scene, they get an
idea of what happened from
an initial assessment of the
scene.
2. CSI: Once the crime has been
documented, they starts collect
evidence, can be blood, hair,
footprints, weapons, clothing. They
describe how the scene looks, making
sketches, and taking photographs.
CSI team wear
disposable coveralls,
example:
• Latex globes
• Face mask
3. Police detective:
They often get useful information by
interviewing people living near the
crime scene. People surrounding area,
who were witnesses, the family and
friends, and who were victims. The
investigators look at all the evidence
and try to draw conclusions.

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6. Once the crime has been documented,
CSI collect evidence, can be: clothing,
weapons, hairs, footprints, tool marks,
with very careful, to not contaminates
the scene.

9. Forensic Entomology

10. The first job is to examine the outside of the body.
Bruising, a rash, marks on the skin can indicate injury,
disease, or poisoning. There may also be larger wounds
caused by bullets, a knife, or a weapon.

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14. ALTERNATIVE LIGHT
PHOTOGRAPHY:
Specialists often use high-
speed cameras to
understand gunshots
wounds or see damage
even before on the skin.
3D FORENSIC FACIAL
RECONSTRUCTION:
Is a technique, a real-
life human remains and
extrapolates a possible
physical appearance.
VIDEO
SPECTRAL
COMPARATOR
2000: scientists
and investigators
can look at a
piece of paper
and see hidden
writing,
determine quality
of paper and
origin.
AFIS: Use DNA to identify criminals and
victims using trace evidence like hair or
skin.