Which is an example of an impact printer?
Common examples of impact printers include dot matrix, daisy-wheel printers, and ball printers. Dot matrix printers work by striking a grid of pins against a ribbon. These printers, such as laser and inkjet printers are much quieter than impact printers and can print more detailed images.
Which are important characteristics of a printer photocopier or fax machine?
Which are important characteristics of a printer, photocopier, or fax machine? Infrared luminescence can reveal writing that has been erased. Variations in vertical and horizontal alignment cannot be used to identify a typewriter.
What is infrared luminescence used for?
Infrared luminescence is used to: Reveal writing that has been erased AND detect if two different inks were used in the writing of a document.
What do Questioned Documents include?
Terms in this set (16)
- Questioned documents include:
- An analysis of a declaration that indicates whether a person is being truthful or deceptive is.
- Literary forgery refers to the forgery of a:
- Counterfeiting-detecting pens are inexpensive special pens and markers containing the element.
What are some examples of individual evidence?
Examples of class evidence include blood type, fibers, and paint. Individual Characteristics are properties of physical evidence that can be attributed to a common source with a high degree of certainty. Examples of individual evidence include anything that contains nuclear DNA, toolmarks, and fingerprints.
When can hair be used as individual evidence?
Hair is considered class evidence when the follicle is not attached because the follicle is the part that contains DNA. When the follicle is attached, it is considered individual evidence. What are some functions of hair for mammals? Explain hair structure.
Which is more valuable in court class or individual evidence?
Individual evidence can prove something that is material to a crime. Fingerprints are considered to have high probative value because they can belong to only one person. Class evidence does not generally prove a fact, except in cases where it exonerates or eliminates individuals.
Are shoe prints individual evidence?
Footprints and tireprints As shoes and tires are used, individual characteristics such as nicks, cuts, and wear patterns develop. These characteristics may show up in prints and impressions and can be compared with a suspect’s shoes or tires.
What type of evidence is shoe prints?
Footwear impression marks – the mark made by the outside surface of the sole of a shoe (the outsole) – are distinctive patterns often found at crime scenes. They are among the most commonly found evidence at crime scenes and present more frequently than fingerprints. Footwear marks provide valuable forensic evidence.
What type of evidence is impression evidence?
Impression evidence can be generally defined as objects or materials that have retained the characteristics of other objects or materials through direct contact. Footwear and tire tread impressions are the most common types of impression evidence. Footwear examinations are less common than fingerprint examinations.
What are the three types of tire pattern evidence?
Evidence that May be Examined Footwear and tire tracks can be deposited on almost any surface, from paper to the human body. Prints are divided into three types: visible, plastic and latent. A visible print is a transfer of material from the shoe or tire to the surface.
What are 3 categories of impressions?
a) Impressions fall into three basic categories: patent, latent, and plastic.
What is impression evidence?
Impression evidence is created when two objects come in contact with enough force to cause an “impression.” Typically impression evidence is either two-dimensional — such as a fingerprint — or three-dimensional — such as the marks on a bullet caused by the barrel of a firearm.
Is Broken Glass class or individual evidence?
Glass can be found as individual characteristic in cases where significant fitting of two glass fragments. However, glass is usually class evidence therefore the value of evidence will depend on the discrimination powers of techniques used for its comparison.
Why is blood type class evidence?
Class evidence consists of substances such as blood and hair, which can be used to place an individual in a general class but cannot be used to identify an individual. For example, blood typing can be used to establish whether someone has A, B, AB, or O blood, but cannot point to a person.
Does all glass have the same density?
A layer of “heavy” bromoform is first added to a cylinder. It has a density of 2.889 g/cm3 at 15 °C, so most common glasses will float on its surface….Glass Density Evidence.
| Glass Type | Density/g/cm3 |
|---|---|
| ordinary bottle | ~2.4-2.8 |
| ordinary window | ~2.4-2.8 |
| Corning 0211 Zinc Borosilicate Glass | 2.53 |
Is Blood Type Class evidence?
Blood type is considered to be class evidence. Although it may not specifically identify the suspect, explain how it still could be useful in helping to investigate a crime. Explain how the product rule can be used to determine whether two blood samples come from the same source.
What is the rarest blood type?
AB negative
What is the real evidence?
Real evidence, often called physical evidence, consists of material items involved in a case, objects and things the jury can physically hold and inspect. Real evidence is usually admitted because it tends to prove or disprove an issue of fact in a trial.
How is blood type determined?
Blood types are determined by the presence or absence of particular antigens on the surface of red blood cells. There are eight main blood types: A positive, A negative, B positive, B negative, AB positive, AB negative, O positive and O negative. The positive and negative refers to your Rh type (once called Rhesus).
Can your blood type change?
Can your blood type change? Usually, you will have the same blood type all of your life. However, in some cases, the blood types have changed. This has been due to unusual circumstances, such as having a bone marrow transplant or getting certain types of cancers or infections.
Is O+ blood type rare?
O+ is the most frequently occurring blood type and is found in 37 percent of the population. O- is found in six percent of the population. This blood is the second most frequently occurring blood type. Thirty-four of every 100 people have A+.
What is the golden blood type?
Rh
What blood type was Jesus?
AB blood
Why is O negative so rare?
People with O negative blood often wonder how rare their blood is since it is always in demand by hospitals and blood centers. However, the rarest blood type in the world is Rh-null, which is so rare most of us have never heard of it. Fewer than 50 people in the entire world population are known to have Rh-null blood.
What are the 3 rarest blood types?
What’s the rarest blood type?
- AB-negative (. 6 percent)
- B-negative (1.5 percent)
- AB-positive (3.4 percent)
- A-negative (6.3 percent)
- O-negative (6.6 percent)
- B-positive (8.5 percent)
- A-positive (35.7 percent)
- O-positive (37.4 percent)