Fingerprints

Forensic experts typically use a chemical called ninhydrin to develop latent fingerprints. Ninhydrin reacts with amino acids present in the oils and proteins of fingerprints, producing a purple or blue color that makes the prints visible for analysis.

No, fingerprints do not rub off easily because they are composed of patterns of raised ridges on the skin's surface that are formed before birth and remain relatively unchanged over time. However, certain activities or conditions, like excessive washing or manual labor, can temporarily alter the appearance of fingerprints but they will eventually return to their original state.

Yes, fingerprints can be removed by rubbing or washing the hands, often from frequent contact with surfaces or exposure to water. However, fingerprints can also be altered or obscured through intentional means like surgery, injury, or intentional deformation.

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.

The fingerprint region in IR spectroscopy typically ranges from 1500-500 cm-1. This region contains a high density of peaks that are unique to the molecule being analyzed, offering a unique fingerprint for identification. It is particularly useful for identifying functional groups and providing fine structural details of a compound.

on a laptop look on the bottom of it for "product" and get the info (brand and model number). go onto the website: opendrivers.com and type in the search box you computer type and model and "authentec" (compaq nx6320 authentec) to search for the computers fingerprint drive. click on your computers drive then type in the code it tells you. download the one that says "official server", DON'T download the one that says "automatically download and update all outdated drivers" because it downloads other software too. at the start of the installation it will tell you what other software you will need to download to get it working. download and install them by searching on google for them and then you will be able to use it.

Yes, fingerprints can be lifted from scotch tape if the appropriate techniques are used. The adhesive side of the tape can retain the print pattern when pressed against a surface. These prints can then be analyzed and compared for identification purposes.

Solid iodine sublimes, meaning it transitions directly from a solid to a gas without becoming a liquid. This property makes it difficult for iodine to leave residue on fingers when touched, which is why it doesn't stick to fingerprints.

No, not permanently anyway. You can "temporarily" remove some ridge detail if you sand deep enough, but this can also cause skin nerve damage. But as the skin cells flake off and new cells rise the detail will return (within weeks). If you sand too deep you will cause scar tissue to form and this can cause the sensitivity of your fingertips to be lost, is it worth it? You can permanently remove your fingerprints with acid, but again..you've just destroyed the dermis and everything in it, nerves, capillaries..etc.

When your fingerprints are taken for background check or comparison purposes, there are two different ways used. First, each of your digit pads will be separately rolled (from left to right) over an ink pad. The rolled in the same fashion on a specially labelled fingerprint card. One digit is done at a time. After the rolling of all your digits, four fingers from one hand are pressed straight down onto the ink pad, then pressed straight down onto the card. Repeat with that hand's thumb. repeat again for the other hand.

CSI technicians use powder or chemical solutions to make fingerprints visible on surfaces. They carefully lift the prints using tape or specialized tools without smudging them. The lifted prints are then analyzed and compared to known prints in databases to identify potential suspects.

The UV-Vis absorption spectrum is often referred to as the fingerprint of a substance because it provides a unique pattern of absorption peaks and intensities that is specific to that substance. This spectrum is commonly used to identify and characterize unknown compounds in chemistry.

The series of lines emitted by a gas, known as its emission spectrum, is unique to each element, similar to a fingerprint being unique to each individual. By analyzing the specific wavelengths of light in the emission spectrum, scientists can identify the elements present in the gas sample, much like how fingerprint analysis can determine a person's identity.

It's called Dilepathy, its actually very precise in its nature. Pretty much a branch of chemistry just for fingerprints (and other similar stuff). I'm not a scientist but this video explains the whole thing really well http://www.youtube.com/watch?v=oHg5SJYRHA0

It is extremely rare to not have fingerprints. Not having fingerprints, a condition called adermatoglyphia, is a genetic condition that affects a very small number of people worldwide.

It has been used as a method to develop latent fingerprints on items of evidence. The fingerprints must be photographed as their visibility does not last. Iodine has been used when the evidence must not appear to have been examined, such as mail fraud cases where the fingerprints are developed and then the mail continues on it's way to allow authorities to trap the accomplice.

Fingerprints can be taken in many ways. One includes stamping. Dab you fingers in ink and place them on paper without smudging them. another way is more advanced. If you fingerprints have been left on a surface, you can lift them using liquefied super glue. You put the object with the prints on it in a special box with the Superglue The machine makes most of the super glue evaporate, but some sticks to the prints... Thus, they have you fingerprints.

DNA fingerprinting (aka DNA profiling) is a scientific procedure used to determine identity or parentage using DNA. Variable Number Tandem Repeats (VNTR) are found in the nucleotides of a DNA strand. When there is a pattern of two or more nucleotides that is repeated, and the repeated patterns are directly adjacent to each other (CATCATCAT) this is a VNTR. These VNTR show up when used in gel electrophoresis, and this outcome can be used to compare DNA samples. If the pattern in the gel for a a blood sample matches the pattern in the gel for an adult, the blood most likely belongs to the adult.

I suppose extreme scarring of the fingertips could have that effect, but it's hard to imagine why anyone would want to do that, if all you have to do to avoid leaving fingerpriints is to wear gloves. I should also point out that a person with obviously removed fingerprints is pretty suspicious, don't you think? :} If you mean, how can one erase latent fingerprints from an object, it depends on how the print was made, and what the object was. Fingerprints work like stamps; something will coat the tips of the fingers and, when you touch something, the pattern of the fingerprint is left behind. This can be natural oils from the body (which are actually pretty hard to detect actually), paint, soot, other oils such as motor oil, cooking oil, etc. How to clean the print depends on what made the print. For instance, prints made with paint are best removed with paint remover. Prints made with bodily fluids like sweat or oil can be removed with a detergent. Note that the acidic nature of sweat may mark or etch compounds like brass or copper, so removing the fingerprint then would be a matter of mechanically removing the etching from the metal.

Yes, you can leave plants in pots while gardening. This can be beneficial for plants that thrive in containers or for temporary arrangements. However, make sure to periodically check the health of the plants, ensure they have sufficient nutrients and water, and consider repotting as needed.

To remove fingerprints from a surface, you can use a soft cloth or microfiber towel with a small amount of water or glass cleaner. Gently wipe the area in a circular motion until the fingerprints are removed. For stubborn fingerprints, you can try using isopropyl alcohol or a specialized fingerprint remover.

the best way to find fingerprints is to use iodine this Crystal is very easy to use you just heat up a very small portion in a glass tube (you can heat up with only the heat of your hand).In that glass tube put in the sample aka paper and the particles will give the iodine a distinctive yellow patch.

Oils from the skin can easily transfer from your finger to the plate if you touch the chalky side. Amino acids from these oils may show up in a developed chromatogram, ruining your experiment.

Yes, fingerprints can be wiped from paper through techniques such as using a soft eraser or specialized products designed to remove oils and residues. However, complete removal may be difficult depending on factors like the type of paper and the nature of the fingerprint.