Evidence exists in many different forms. Many of which are introduced in trial and some that are not. Scientific and forensic types of evidence can be extremely helpful in proving a case, but there are rules and standards that these types of evidence must meet before they can be submitted during a trial. Scientific evidence are generally more common in serious felony cases, as opposed to misdemeanor charges.
Scientific evidence is based off of knowledge that has been developed by using the scientific method. This means that the basis for the evidence has been hypothesized and tested and is generally accepted within the scientific community. This could mean that the theory on which the scientific evidence is based has been published in scientific journals and has been subjected to peer review within the scientific community.

There are many types of forensic evidence that are often considered scientific evidence, like DNA matching, fingerprint identification, and hair/fiber evidence. The methods used to develop these types of evidence are generally beyond the scope of knowledge that judges and juries possess and are therefore normally introduced as scientific evidence.
However, this is not to say that scientific evidence cannot be excluded from a courtroom or trial. There are often many steps that must be taken before a piece of scientific evidence can be put forth in a courtroom as factual evidence. In general, a scientific theory must have established itself in the scientific community and become generally accepted as the truth before it will be asserted as evidence at trial.
Fingerprint matching is generally admissible as forensic evidence in trial because it has been proven to be reliable to many years. In addition, things like radar and laser speed guns are generally accepted as being a valid method to tell the speed of a car at a given time and can be admitted as evidence. But keep in mind that there will often be new types of scientific evidence that parties will attempt to submit at trial – science that may not have a solid foundation within the scientific community.
If one side of a trial wishes to submit scientific evidence that is not yet generally accepted within the scientific community, it often happens that the court orders a mini-trial to be held in order to determine the validity of the scientific theory on which the evidence is based. As an example, DNA evidence had to go through many mini-trials before it became generally accepted as valid evidence at trial.
If you or a loved one is in a bind as a result of a criminal charge, immediately contact a Seattle Criminal Attorney. A Criminal lawyer is not going to judge you, and understands that everyone makes mistakes. Hiring a Seattle Criminal Lawyer to help can – at a minimum – reduce penalties, and can help direct people on how to best deal with their criminal charge, and many times even get them dismissed. So it should go without saying that someone cited for a misdemeanor or felony should hire a qualified Seattle Criminal Lawyer as soon as possible. Criminal charges can cause havoc on a person’s personal and professional life. Anyone charged with a crime in Washington State should immediately seek the assistance of a seasoned Seattle Criminal Lawyer.