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By definition, forensics is the science that makes uses of various techniques and tests to investigate crimes.  The mere fact that science in this particular field is used in the service of the law, there are also certain rules and stipulations of law that fall under forensics.  There are a number of sciences in the name of forensics and these include the collection and preservation of evidence and it also covers the analysis of evidence.  Forensic evidence can take the form of many different things.  It can be chemical compounds in the case of terrorist acts or it can be biological evidence like blood and skin for sexual assault cases or murder cases.

With the addition of forensic science as a way of determining someone’s innocence or guilt, crimes that are sadly prevalent in our society are being closed.  The scientist who studies the data and evidence in a case can help with a witness testimony on the results of the different examinations and tests of the evidence and they can also provide assistance in the way of using their skills and expertise for analyzing evidence.  Forensics law covers court proceedings in civil cases and criminal cases.  Further, if crimes are related and linked to other crimes, the pattern can be easily pointed out through forensics.

As an example, DNA fingerprinting evidence can be a tool used for linking one offender to other crimes.  It might be that one crime is closed but others have turned into cold cases and through DNA evidence, other sexual assault cases or murder cases will be solved.  If suspects still need to be found, biological evidence like blood will help in narrowing the suspect pool.  Both with traditional ways of analyzing data and with new technology, the highest standards of accuracy and quality are achieved and criminals are brought to justice.

Forensics law also works with rules like chain of evidence, the exchange principle and successful conclusions.  With chain of evidence, a smoking gun has to be made official with the use of a chain of custody form which details who analyzed the evidence and what steps were made in the investigation.  Everything has to be done by the book if the criminal is to be put behind bars.  With the exchange principle, trace evidence in investigation works under the same premise that if there’s contact between two items, there’s sure to be an exchange.

As for successful conclusions, forensics law arrives at these with logical reasoning and scientific principles.