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Answer:
There are several different types and their use depends upon the surfaces and conditions. Two commonly used ones are: Carbon Black, and a powder made of very finely ground metal filings.
Answer:
Wikipedia indicates the following powders can be used (differnet colored powders are required to show prints in different colored surfaces)
White
- Haddonite White (titanium dioxide 4 parts, kaolin 1part, French chalk 1 part or titanium dioxide 60%, purified talc 20%, kadin lenis (light) 20%).
- Lanconide (zinc sulfide 4 parts, zinc oxide 4 parts, barium sulfate 4 parts, titanium dioxide 4 parts, bismuth oxychloride, 4 parts, calcium carbonate 1 part)
- Mercury-chalk (hydrargyrum-cum-creta) now no longer used, as it represents a serious health risk.
- Titanium dioxide
- White tempera (starch, titanium dioxide)
- Chalk
Black
- Charcoal
- Graphite
- Dactyl black (Graphite, lampblack, gum acacia)
- Dragon's blood (powdered resin of the Daemonorops Draco plant)
- Haddonite black (lampblack 70%, graphite 20%, powdered acacia 10%)
- Lampblack
- Photocopier toners
Other
- Aluminium powder
- Metal powders
- Lycopodium
- Magnetic powders
- Fluorescent powders
- Anthracene
What else can I help you with?
How much is a keg of powder?
The price of a keg of powder can vary depending on the type of powder and where you are purchasing it from. It can range from around $100 to several hundred dollars. It is best to contact a local supplier or check online for specific pricing.
What type of meetings are NA Meetings online?
NA meetings are for drug addicts. NA stands for Narcotics Anonymous. Check with local medical clinics to find out if meetings are available in one's area.
How do you set off a bomb?
you don't.............. its not in human nature to do so, and I'm watching you.................. whoever wants to find this out. it is all dependent on the type and reason of the question, what type of explosive are you asking about also what reason are you asking this for... if you just want to know how it works ask how does a _____ bomb detonate/work. think more about the question your asking.
What ia a mural?
A mural is a large artwork painted or applied directly onto a wall, ceiling, or other permanent surfaces. Murals can be created using various techniques, including paint, digital printing, or peel-and-stick wallpaper. They often depict landscapes, abstract designs, cultural themes, or storytelling visuals, transforming plain walls into vibrant and immersive spaces.
What type of information can you find in autobiography that might not be in a biography?
The authors feelings about events are seen better in an autobiography and it is a primary source so really many things may show up in an autobiography and not in a biography.
Can fingerprints be traced on paper?
Yes, fingerprints can be traced on paper surfaces using various methods, such as dusting with powder or using chemical treatments. The quality of the prints and the chances of successful tracing depend on factors like the type of paper and the conditions in which the prints were left.
How are fingerprints collected at a crime scene?
First, the detective locates something the suspect may have touched, for instance, his laptop, the doorknob to his bedroom, etc. Next, the detective carefully dusts fingerprint powder over the area. When a fingerprint is revealed, the detective takes a clear, clean plastic sheet and press it onto the fingerprint, therefore collecting the specimen. The fingerprint is then carefully taken to a lab to be tested.
What type of fingerprint that cannot be seen with the naked eye?
Latent fingerprints are the types of fingerprints that aren't visible to the naked eye.
Does finger print stay on paper?
Yes, fingerprints can potentially stay on paper depending on factors such as the type of paper and how it is handled. Fingerprints are made up of oils and sweat from the skin which can transfer easily onto surfaces like paper.
What some type of powder you will find on the kitchen floor?
flour
What type of light helps find evidence and starts with the letter U?
ultraviolet light can be used to find fingerprints and hidden blood
What is a controlled variable in fingerprints?
A controlled variable in the context of fingerprints refers to factors that are kept constant during an experiment or comparison, such as the method of collection, the surface on which the fingerprint is deposited, or the type of powder used to enhance the print. By controlling these variables, researchers can ensure that any differences or similarities observed in fingerprints are due to the specific individuals rather than external factors.
What type of nitrate is use for developing fingerprints on wood?
Silver nitrate is commonly used for developing fingerprints on wood surfaces. The silver ions in the nitrate solution react with the components in the sweat residue left by fingertips, creating a visible mark that can be visualized under certain lighting conditions.
Which type of fingerprints are least common?
The least common type of fingerprints are the double loop pattern, which is a combination of two loops within one fingerprint.
What is the most common type of biometric security?
Fingerprints
Can fingerprints be lifted from vinyl?
Yes, it is possible to lift fingerprints from vinyl surfaces. However, the success of recovery largely depends on the quality of the print, the type of vinyl, and the technique used to lift and analyze the prints.
What are Composite Fingerprints?
It's a type of fingerprint believe it or not ;) They are fingerprints made up of combintations of the tented arc, loop and whorl patterns.
