Fingerprinting

1. Wood Glue method

- Where are the pores found? Are they regularly spaced?

Pores are found throughout the surface of our skin, and are regularly spaced all over the epidermis of our skin.

- Are the lines of your print equally spaced throughout?

Yes

2. Cyanoacrylate (superglue) Fuming method

- If the contrast of the white print against the black background is still too faint for a good photograph to be captured, what could be done to enhance the fingerprint?

You can use more superglue to fume the print for a longer period of time or oil your fingers before creating fingerprints on the plastic sheet used so that the print is more obvious and visible

3. Iodine Fuming method

- What are the possible substances that may be used to render the prints more permanent?

The paper used as the base can affect how long the prints last for

- Why does the print disappear?

The prints appear on the paper because the iodine sublimes. However this process is reversible and thus 

4. Powder Dusting method

Questions for the lesson:

- What is magnetic powder dusting and how does it work?

magnetic powder is used on nonmagnetic surfaces. With magnetic powder, there is no brush with fibers to touch and possibly damage the print. The powder is not itself magnetic, but is attracted by a magnet and carried as whiskers by a magnetic wand. Nothing but the powder itself touches the print. The wand is a closed, hollow tube containing a magnet on a rod. When the rod is pushed in, the magnet is located I the end of the tube and the powder clings to that end. When the rod is pulled out, the magnet is moved to the center of the tube and the powder falls off. With the rod in and a cluster of powder whiskers on the end, you are ready to dust for latent prints.

Creating my own fingerprint!

Questions for this activity:

- Compare the fingerprint patterns on your right and left hand. Are they mirror images of each other?

- What kind of patterns do you see?

whorl

- Do the loops curve in the same or in different directions in different fingers?

they curve in different directions

- Compare the size of the patterns e.g. how many ridges make up a loop?

Victim: Robert Hughes, middle aged caucasian man
- appears to have been break in followed by struggle
- foul play suspected
- victim not discreet man, known for flaunting wealth and for philandering
- many women unhappily left or entered his house very often
- 2 different women entered victims house on the same afternoon but at different times on day of murder
- pretty blond entered at 1 left in good mood about an hour later
- feisty redhead entered at around 4 left 15 mins later very angry
- redhead seen occasionally with victim before blond never
- man was seen by neighbor walking back and front in front of victims house at around 10.15 p.m. on night of murder

Place of entry
- lock on back door forced open using a tool

Place of struggle
obvious signs of struggle

Place of murder
- victim lying in pool of blood

Fields of studies: Police, detectives, forensic sciences, coroner, pathology, ballistic,

physical evidence found
- fibers that caught on fragments of broken chair
- 30 different sets of fingerprints
- hair
- footprints
- scratch marks
- letter
- blood stain
- would
- paint chips

Trash case and awareness test

An inconsiderate slob dumped trash on Rachel Rabbit's lawn. One of these 2 suspects is guilty. Slylock Fox  found evidence that may identify the loathsome litterbug.

What did he observe?

Slylock observed fish bones in the trash meaning that the suspect is someone who eats fish

Bull is an herbivore and only eats plants

Raccoon is an omnivore and eats both plants and animals

Raccoon is the trash tosser

Awareness test

- did not see bear because the question was " how many passes did the people in white make" and thus I was only focusing on the people in white passing the ball. Since the bear was black in colour, I did not notice it. 

- saw the bear the second time because was looking out for it.