Why do particles matter to forensic scientists?
Particles matter to forensic scientists because particles can leave behind evidence of the criminal.
Particles, only regarded as dust for example and not fibres etc hold great significance and can identify if a body has been moved etc, along with evidence such as livor mortis etc
Chemicals used in forensic studies?
There are four kinds of chemical reagents used to expose invisible, or latent, fingerprints. They
are cyanoacrylate, silver nitrate, iodine, and ninhydrin
Cyanoacrylate
The trade name for cyanoacrylate is super glue.Cyanoacrylate is the active ingredient that makes up 98% of Super Glue. This item has become a very practical and innovative forensic tool. When cyanoacrylate is heated or mixed with sodium hydroxide (NaOH), it releases fumes that interact with the amino acids that are found in the fingerprint residues found on an object, thus making a white print.
Silver Nitrate
Silver nitrate is a chemical ingredient found in black-and-white photographic film. When silver nitrate is applied to a latent fingerprint, the chloride found in fingerprint residue interacts with the silver nitrate and forms another compound called silver chloride. This new compound reveals a black or reddish-brown fingerprint in the presence of ultraviolet light.
Iodine
The third chemical used to reveal latent fingerprints is called iodine. When heated up, crystalline iodine releases iodine fumes into a fuming chamber, where the iodine interacts with the oils found in the latent print thus producing a brownish colored fingerprint. Unfortunately, this kind of print has a tendency to fade rather quickly. Therefore, it must be captured on film right away or fixed by spraying it with a "fixing solution" made of water and starch. This fixing solution allows the print to last for weeks or even months in lieu of a few minutes.
Ninhydrin
The fourth kind of chemical reagent used to reveal latent fingerprints is ninhydrin. Ninhydrin, also known as triketohydrindene hydrate, has been used for many years to reveal latent fingerprints. An object suspected of containing latent fingerprints is sprayed with a solution of ninhydrin. It may take several hours for the fingerprints to show up due to the fact that ninhydrin reacts very slowly with the oils found in the fingerprint. However, heating up the object to a temperature of 80 to 100 degrees Fahrenheit can reduce the reaction time. The resulting fingerprint will be a purple/blue print.
DFO 1,8-Diazafluoren-9-one
DFO is used to develop latent prints on porous surfaces. DFO reacts to the amino acids present in perspiration. The resulting prints will fluoresce with the use of various lasers and light sources. DFO can be either dipped or sprayed. After processing with DFO, the item must be dried and placed in an oven at approximately 100º Celsius (212ºF) for twenty minutes. An iron (no steam) may be used if an oven is unavailable.
Rhodamine 6G
One of the most brilliant dye stains for latent print development on non-porous items with lasers and alternate light sources, after processing with cyanoacrylate. Evident offers Rhodamine 6G as a premixed 1 liter liquid, or in powder form to be mixed with solvent
Crystal Violet
This stain is commonly used for developing latent prints on the adhesive side of virtually all types of tape. A simple solution of crystal violet and water will produce impressive results.
Ardrox Fluorescent Dye Spray
This fluorescent spray is designed for enhancing latent prints that have been developed with cyanoacrylate. It provides excellent ridge details when the latent print is saturated with Ardrox. Prints fluoresce yellow/green. Comes in a 1 liter spray bottle for easy application. Use ultraviolet equipment for viewing results.
MBD Mixture
MBD Mixture is used after cyanoacrylate processing. MBD is fluorescent when exposed to an alternate light source. MBD is offered as a premixed liter
Sudan Black
Sudan Black is one of the best methods for developing fingerprints on greasy or waxy non-porous surfaces such as glass, metal, milk cartons, interiors of gloves, and candles.
Thenoyl Europium Chelate (TEC)
A fluorescent dye used to enhance cyanoacrylate developed latent prints on non-porous surfaces. Visualized most effectively with long-wave UV only. Submerge or flood the item for 2 minutes, then let dry. Expose to long-wave for maximum development.
Basic Yellow 40
This dye is designed to enhance latent fingerprints developed with cyanoacrylate on non-fluorescent, multi-colored surfaces. Prints fluoresce bright yellow/green between 365nm and 485nm with an alternate light source or a UV light. EVIDENT offers Basic Yellow 40 as a premixed liter of liquid.
Basic Red 28
Basic Red 28 is a red dye for use on cyanoacrylate developed prints. After staining with Basic Red 28, a light source or or UV light is used to visualize the prints. Evident offers Basic Red 28 as either a premixed liquid for immediate use, or as a premeasured concentrate to mix with 1 liter of Petroleum Ether or Methanol.
Red-Yellow Mixture
This mixture of both Basic Red 28 and Basic Yellow 40 provides the user with a wide range of fluorescence with cyanoacrylate developed prints. Red-Yellow Mixture is offered as a premixed 1 liter liquid.
RAY Mixture
This mixture of Basic Red 28, Ardrox, and Basic Yellow 40 provides a wide range of fluorescence with cyanoacrylate developed prints. Offered as a premixed liter of liquid.
RAM Mixture
RAM is a fluorescent stain mixture of Rhodamine 6G, Ardrox, and MBD. Use RAM with an alternate light source after processing with cyanoacrylate. Particularly useful in the enhancement of CA developed prints on plastic bags. After processing with cyanoacrylate, RAM may be applied by spraying, dipping, or flooding. Follow with examination under a light source, UV lamp, or laser. Sold as a premixed liter.
Acid Fuchsin
Acid Fuchsin is an excellent stain for enhancing bloody fingerprints or footwear impressions, and has the unique characteristic of fluorescence when viewed under a light source or laser. Bloody latent prints and footwear impressions can be lifted with a white gelatin lifter, then photographed as is or viewed and photographed under your light source, excited at 515-560nm, and using a red barrier filter (600nm).
Fluorescein
This chemical mixture of Fluorescein causes a catalytic reaction to occur between the hemoglobin in blood, and oxygen. This reaction produces a luminescent stain which will luminesce in the dark when excited with UV or ALS. The major advantage of Fluorescein is that it will continue to luminesce for hours under UV or ALS after the initial application, and without additional applications of the reagent. This product is commonly used to detect blood spatter, blood stained fingerprints and footwear impressions, as well as, blood evidence which has been concealed or cleaned. Fluorescein also reacts with materials other than blood, and therefore caution should be exercised when interpreting luminescent areas.
Zinc Chloride
Zinc Chloride is a traditional method of enhancing prints on porous materials after processing with Ninhydrin. Offered as a 1 liter solution in Methanol.
Nile Red
Nile Red is a lipid stain which reacts to the fats and oils present in a latent print. Nile Red fluoresces with an alternate light source. Apply by spray or brushing onto surface. Available as a premixed liquid, Methanolic or Aqueous.
Phloxine B
Phloxine B is a protein stain which develops a reddish-orange colored print. Phloxine B is particularly good when used to develop latents on dark-colored or multicolored backgrounds. Evident offers Phloxine B as a premixed 1 liter liquid.
Amido Black
Develop faint and often invisible bloody fingerprints and foot impressions with this protein dye stain. Incredible results on most surfaces, even human skin.
LCV - Leuco-Crystal Violet
An effective protein stain used to develop and enhance bloody fingerprints or footprints deposited on non-porous surfaces. Various protein stains, such as amido black, etc., can be used after processing with LCV. Cyanoacrylate fuming may be detrimental to this process. Spraying is the most effective method of application. Use a fine mist, development will occur within 30 seconds. Contains fixative.
Graduated Spray Bottle
Perfect for mixing and applying a variety of liquid based forensic chemicals. Made of durable clear plastic and topped with an industrial grade trigger sprayer. Clearly marked with both ounce and millimeter graduations, as well as, a dilution ratio guide. Works great in the lab or in the field and fits comfortably in the hand. Large 24 oz. size.
Other Chemicals
Blood Enhancement Chemicals,Iron-rich Dust or Soil Impressions,Calcium or Magnesium-rich Impressions
What are the pros and cons of being a forensic science?
Pros: Opportunities to use scientific expertise in criminal investigations, contribute to solving crimes, work in a variety of settings like crime labs or medical examiner offices. Cons: High-pressure work environment with tight deadlines, exposure to graphic and distressing material, potentially long hours.
How much money does a forensic scientist earn in Perth Australia?
Forensic scientists in Perth, Australia can earn an average of AUD $60,000 to AUD $100,000 per year depending on experience and qualifications. Salaries may vary based on the specific employer, level of education, and years of experience in the field.
Who is known as the father of forensic toxicology and why?
Mathieu Orfila is known as the father of forensic toxicology. He made significant contributions to the field by developing methods to detect poisons in the human body through chemical analysis in the early 19th century. Orfila's work helped establish toxicology as a legitimate science used in criminal investigations and legal proceedings.
What are the radioisotopes used in forensic science?
Some of the radioisotopes used in forensic science include carbon-14 (C-14) for radiocarbon dating of organic materials, strontium-90 (Sr-90) for identifying human remains based on dental records, and iodine-131 (I-131) for identifying thyroid disorders in individuals. These radioisotopes help forensic scientists determine the age of samples, establish human identity, and assess physiological conditions in individuals.
What microscope did matthias schleiden use?
Matthias Schleiden used a compound light microscope in his studies on plant cells. This type of microscope uses multiple lenses to magnify the image and allow for the observation of small structures within the cells.
Well, I can speak from personal experience. Many of my fingertips have deep vertical lines in them and they experience a reduced almost numb sanitation. I was not born with them; I believe it's a result of scaring from clusters of small clear fluid filled blisters that seem to invade the sides and bottom of my fingertips. They come and go but they have left behind a shriveled look to my fingers. Especially my right thumb and index finger have been affected. It's some sort of non-contagious eczema but it may be hereditary. My father had the same problem on the soles of his feet.
How can isotopes be used by forensic scientist to solve crimes?
Because it can show where someone has been on holiday, visiting someone or living for the past weeks or years depending on the length of the hair, the width of the hair, and how long it took for the hair to grow to its length.
Do forensic toxicologists have a MD?
If you are talking about the medical examiner, who interprets and reports the results of the toxicology screenings/tests, then yes - they are MDs. However, forensic labratory technicians who run the tests are not. Usually a Bachelor's degree with specialized training in forensic science is required.
Atomic decay is a random phenomenon whose distribution is exponential (generally). Thus if the average lifetime is t0 and you wait a time t, the probability that a single atom decay is
p=(1-exp(-t/t0))
Thus if you have N atoms, the average number of atoms that decay in the tine t is
<N> = N0 (1-exp(-t/t0))
where N0 is the initial number.
naturally in a specific experiment the real number of atoms that decay in a time t will not be exactly <N>, this is only the average number over a potentially infinite number of experiments.
However, greater N0, more likely the number of atoms observed in a specific experiment will be near to <N>.
In your case <N>=188.1 and the expected deviation is of the order of 13, thus the result could fluctuates with high probability between 200 (that is all decay) and 162 (2 sigma point).
What is the world's largest Forensic Laboratory?
The FBI Laboratory in the United States is one of the world's largest and most comprehensive forensic laboratories. It provides forensic services to the FBI, law enforcement agencies, and partners around the globe.
What are the benefits of a forensic scientists?
Forensic scientists play a crucial role in criminal investigations by analyzing evidence to help solve crimes and bring perpetrators to justice. They provide expert testimony in court, conduct scientific experiments, and use specialized techniques to examine evidence such as DNA, fingerprints, and substances. Their work helps to ensure a fair legal process and contribute to public safety.
What do Forensic Toxicologists do?
say their was a crime, they would handle any poison or drugs involved
its weird i no this off the top of my head im only eleven but then again i study forensics in my spare time an i write
Where do Forensic Toxicologists work?
Forensic toxicologists typically work in crime labs, medical examiner's offices, law enforcement agencies, hospitals, and government agencies. They may also work for pharmaceutical companies or private laboratories involved in drug testing and analysis.
How is forensic toxicology done?
The primary concern for forensic toxicology is not the legal outcome of the toxicological investigation or the technology utilized, but rather the obtainment and interpretation of results. A toxicological analysis can be done to various kinds of samples.
What is the meaning of forensic science?
Forensic science is a multidisciplinary subject used for examining crime scenes and gathering evidence to be used in prosecution of offenders in a court of law. Forensic science techniques are also used to examine compliance with international agreements regarding weapons of mass destruction.
The main areas used in forensic science are biology, chemistry, and medicine, although the science also includes the use of physics, computer science, geology, and psychology. Forensic scientists examine objects, substances (including blood or drug samples), chemicals (paints, explosives, toxins), tissue traces (hair, skin), or impressions (fingerprints or tidemarks) left at the crime scene. The majority of forensic scientists specialize in one area of science.
Above retrieved from Answers.com
Ballistic stretches involve the lengthening of muscles during movement. They are used for warming up for training and competing in sports. These exercises are also known as dynamic stretches.
The opposite of the ballistic stretch is the passive or static stretch where the stretch position is held in pace for approximately 30 seconds.
What are the highest paying job?
CNBC Highest Paying Jobs 2011
Listed with average annual salary (source: U.S. Bureau of Labor Statistics)
1. Doctors and Surgeons: $165,720-$225,390
2. Chief Executive Officer (CEO): $173,350
3. Dentists: $158,770
4. Lawyers: $129,440
5. Natural Sciences Manager: $129,320
6. Petroleum Engineer: $127,970
7. Architectural Engineering Manager: $125,900
8. Computer and Information Systems Manager: $123,280
9. Marketing Manager: $122,720
10. Financial Manager: $116,970
11. Airline pilot, copilot and flight engineer: $115,300
12. Sales Manager: $114,110
13. Industrial-Organizational Psychologist: $114,040
14. General and Operations Manager: $113,100
15. Physicist: $112,020
CNBC Highest Paying Jobs 2010
Listed with average annual salary (source: U.S. Bureau of Labor Statistics)
1. Surgeons: $219,770
2. Anesthesiologists: $211,750
3. Oral & Maxillofacial Surgeons: $210,710
4. Orthodontists: $206,190
5. Obstetricians & Gynecologists: $204,470
6. Internists: $183,990
7. Physicians & Surgeons: $173,860
8. Family and general practitioners: $168,550
9. Chief Executive Officer (CEO): $167,280
10. Psychiatrists: $163,660
11. Pediatricians: $161,410
12. Dental Generalist: $153,570
13. Dental Specialist: $153,570
14. Podiatrists: $131,730
15. Lawyers: $129,020
16. Natural Sciences Managers: $127,000
17. Prosthodontists: $125,400
18. Engineering Managers: $122,810
19. Computer and Information Systems Managers: $120,640
20. Marketing Managers: $120,070
Forbes Magazine: America's 25 Best-Paying Jobs 2009
Listed with average annual pay
1. Surgeons: $206,770
2. Anesthesiologists: $197,570
3. Orthodontists: $194,930
4. Obstetrician and Gynecologists: $192,780
5. Oral and Maxillofacial Surgeons: $190,420
6. Internists: $176,740
7. Prosthodontists: $169,810
8. Physicians: $165,000
9. Family and General Practitioners: $161,490
10. CEOs: $160,440
11. Dentists: $154,270
12. Psychiatrists: $154,050
13. Pediatricians: $153,370
14. Specialist Dentists: $142,070
15. Podiatrists: $125,760
16. Lawyers: $124,750
17. Natural Sciences Managers: $123,140
18. Engineering Managers: $120,580
19. Pilots: $119,750
20. Petroleum Engineers: $119,140
21. Computer and Information Systems Managers: $118,710
22. Marketing Managers: $118,160
23. Financial Managers: $110,640
24. Sales Managers: $110,390
25. Air Traffic Controllers: $108,090
Jobs That Pay the Most
The 2004 United States Department of Labor, Bureau of Statics' Occupational Survey revealed the 25 highest paid professions fall into five categories:
Medical and dental specialists top the list of the highest paid professions, as they hold numbers one through eight of the 25 highest earning jobs as well as five other rankings on the 2004 list. Anesthesiologists are number one, internists number two and obstetricians and gynecologists number three of the top professional earners in the United States. Oral surgeons take the fourth spot, orthodontists the fifth and prosthodontists the sixth. Psychiatrists are listed as the seventh of the highest paid professions, while surgeons are ranked as the eighth. The average 2004 income for these eight professions is more than $145,600 US dollars (USD).
Family and general physicians, with their average annual 2004 salary listed at $137,090 USD, place tenth on the Survey. Pediatricians, at an average income of $135,730 USD in 2004, are ranked eleventh. Thirteenth on the list of the highest paid professions are dentists, with an average annual 2004 salary of $125,060 USD, while podiatrists are ranked eighteenth with an average income of $94,400 in 2004. According to the Survey, optometrists, with an average salary of $88,410 in 2004, are the twenty-third highest paid professionals in the United States.
Business and technology management professions occupy three of the 25 highest paid professions listed on the Occupational Statistics Survey. Chief Executive Officers (CEOs), with an average annual salary of $140,350 USD in 2004, rank as the ninth highest paid professionals. Computer and Information Technology (IT) managers rank as the twentieth highest earning professionals with an average 2004 income of $92,570 USD. Marketing managers, with average 2004 earnings of $87,640 USD, are ranked twenty-fourth out of the 25 highest paid professions on the Survey.
Airline and space industry jobs are listed as the twelfth, fourteenth and sixteenth highest paid professions in the United States. Airline pilots, copilots and airline engineers earn about $129,250 USD, according to the 2004 statistics. The 2004 average salary of air traffic controllers is about $102,030 USD per year, while astronomers earned an average of $97,320 USD in 2004.
Law-related professions rank seventeenth and nineteenth on the 2004 Occupational Statistics Survey. The average 2004 salary of lawyers is listed as $94,930 USD. Judges and magistrates earn an average of $93,070 USD, according to the 2004 Survey.
Engineering and science professions account for four of the 25 highest paid professions listed on the 2004 Survey. Engineering managers, with an average 2004 annual salary of $97,630 USD, rank as the fifteenth highest earning professionals. Natural Science managers are ranked at the twenty-first highest paid professionals at an average income of $88,660 USD in 2004. Petroleum engineers are listed at number twenty-two on the list due to the findings of their average income at $88,500 USD in 2004. A physicist, with an average annual 2004 salary of $87,450 USD, is the twenty-fifth highest earning professional of the 25 highest paid professions on the 2004 Survey.
Additional Input:
Other High Paying Jobs
1. Movie Directors: $185.71/hr; $956,050/yr
2. Bank CEO : $111.42/hr; $567,050/yr (entry level)
3. Actors: $91.15/hr; $357,430/yr
4. Athlete: $71.31/hr; $131,680/yr
5. Computer programmer: $64.3/hr; $126,940/yr
6. Actuaries, certified: $57.52/hr; $119,680 (base salary only)
7. Pediatricians, general: $56.03/hr; $116,550/yr
8. Psychiatrists: $54.60/hr; $113,570/yr
9. Family and general practitioners: $52.89/hr; $110,020/yr
10. Dentists: $53.28/hr; $110,820/yr
11. Pharmacists: $53.00/hr; $110,240/yr
12. Chief Executives: $51.77/hr; $107,670/yr
13. Airline pilots, co-pilots and flight engineers: (N/A); $99,400/yr
14. Steamfitter (L.U. 638): 47.65/hr; hr wages double after 2pm daily; $150/yr
15. Podiatrists: $45.43/hr; $94,500/yr
16. Lawyers: $44.19/hr; $91,920/yr
17. Optometrists: $42.35/hr; $88,100/yr
18. Computer and information systems managers: $40.33/hr; $83,890/yr
19. Physicists: $40.26/hr; $83,750/yr
20. Air traffic controllers: $40.07/hr; $83,350/yr
21. Petroleum Engineers: $39.33/hr; $81,800/yr
22. Nuclear Engineers: $38.56/hr; $80,200/yr
23. Judges, magistrate judges, and magistrates: $38.24/hr; $79,540/yr
24. Marketing Managers: $37.70/hr; $78,410/yr
Why do forensic labs use infrared spectrophotometers?
Forensic labs use infrared spectrophotometers because they can analyze the chemical composition of evidence samples by measuring the absorption of infrared radiation. This allows forensic scientists to identify and compare substances such as drugs, fibers, and paints in criminal investigations.
What's the difference between a forensic scientist and a forensic science technician?
A forensic scientist is typically involved in analyzing evidence in a laboratory setting and providing expert testimony, while a forensic science technician is usually responsible for collecting and processing evidence at crime scenes. Forensic scientists often have more specialized training and expertise in a particular scientific field, while forensic science technicians have more general knowledge of crime scene investigation techniques.
What is a forensic toxicoligist?
A forensic toxicologist is a scientist who analyzes biological samples to detect and quantify toxic substances in order to determine their impact on the human body. They play a crucial role in investigations involving drug-related deaths, poisoning cases, and other incidents where toxic substances are involved.
It is possible that a possession of a controlled substance charge could impact someone's ability to become a forensic scientist, as employers may require a clean criminal record due to the sensitive nature of the job. However, each case is unique and factors such as the severity of the charge, when it occurred, and the individual's overall qualifications may also be considered. It is advisable to disclose any past charges and consult with potential employers or academic programs for guidance.
What are the responsabilities of a forensic scientist?
Forensic scientists analyze evidence from crime scenes to help solve crimes. They collect, preserve, and analyze physical evidence such as DNA, fingerprints, and weapons. They must also accurately document their findings and present them in court as expert witnesses.
Why use flame tests in forensic science?
Flame tests allow you to get some idea of what substances make up a given sample. It is particularly useful for the identification of polymers, because many of them give off unique burn patterns.