Ballistics
Who was the first person to use comparison microscopes?
Calvin Goddard
What are the 3 points of the triangle?
Horizontal- Distance of shooter from wall
Hypotenuse- Path of the bullet
Unique similarities
Why are serial numbers important?
No two bills of the same series, bank, and denomination have the same serial number. Prevents counterfeiting.
What was the main reason that Indian Security Guard case was investigated?
The entry wound first appeared to be in the back of his head, which is inconsistent with suicides.
What are the 5 most common striated action marks?
Chamber
Shear
Firing Pin Drag
Extractor
Ejector
What are the two ways we investigate a bullet hole at a crime scene?
Math and Dowels
What are the 9 factors that affect handwriting?
Position of writer
Position of document
Other factors
Type of writing instrument
Writing surface
Underlying surface
Mood of writer
Age of writer
Writing speed
What are the security features that are in use to protect against counterfeiting?
1.Portrait stands out and appears raised off the paper
2.Contains clear red and blue fibers woven throughout the bill
3.Has clear, distinct border edges
4.Treasury seal is shown with clear, sharp saw-tooth points
5.Watermark appears on the right side of the bill in the light
6.The security thread is evident—a thin embedded vertical strip with the denomination of the bill printed in it
7. There is minute printing on the security threads, as well as around the portrait
8. When the bill is tilted, the number in the lower right-hand corner makes a color shift from copper to green
What was the conclusion of the Indian Security Guard case?
Who was Lee Harvey Oswald?
Why do we not use dowels first?
It could destroy evidence. (Inside and around the bullet hole)
What are the 12 characteristics of handwriting?
Line quality
Spacing
Size consistency
Continuous writing
Connecting letters
Complete letters
Cursive/Printed Letters
Pen Pressure
Slant
Line Habits
Fancy Curls
Letter Characteristics
What are some ways to prevent check forgery that we talked about in class?
Chemically sensitive paper
Large font size requires more ink and makes alterations more difficult
High resolution borders that are difficult to copy
Multiple color patterns
Embed fibers that glow under different light
Use chemical wash detection systems that change color when a check is altered
KNOW HOW TO DO HANDWRITING ANALYSIS!
OKAY!