Modern scientific methods in the detection of crime

Abstract

Characterized the criminal law in the past, specifically in the eighteenth century and earlier harsh and rebuke and mystery, and it was a criminal investigation based on trying to get the truth through the character of violence and coercion and arbitrary manner, by depriving citizens of their freedom and their money and even their lives regardless of what is called today legitimacy. Did not try to (criminal law) never thought to take advantage of the natural sciences, which at that time was so weak that you do not use them. Spread across the secret trials and there was the principle of criminalization on the basis of any evidence Wah can be obtained. Was the testimony of witnesses, the large role of proof in criminal throughout the ages Vahitt certain procedures and formalities to ensure the validity and punishment inflicted witness perjury.When the certificate is prone to error and forgetfulness and deception he saw eye prone to error because of the ability of human limits both in terms of the senses Kbesr or heard, or the ability of memory and above all else, it may be sometimes false witness concluded grudges on his heart and mind, or has the purposes of material, as well as This is likely the lack of witnesses that has prompted some judicial systems to take the recognition and as a master of the evidence and it is permitted to reach him to resort to various kinds of ways, whether recourse to torture in various kinds of physical, psychological or any other type and images that exceeded all conception. (1) The judges were to enjoy the freedom of limitless on the one hand the imposition of the punishment that Artaunha. Have varied the verdicts were Asdronha different social classes, which the defendants belonged, was the punishment of all the people tougher from the punishment of members of the rich classes, as was their privileged many, but with the development of civilizations and social philosophy, which focused on humans as a hub for all communities turned attention to human rights and freedom and guarantees that community must be secured to him. (2)Fbtalt with the beginning of the nineteenth century and means of torture and forced lawmakers to trend gradually taking forensics has become the investigation depends on the assets and the rules governed by the law if put them null and void and invalidate therefore all the consequent results and was based on his evidence, considering that these rules and procedures dictated by the logic and it is accepted by the conscience guarantees freedom of the accused who is presumed innocent until proven guilty (3),And his conviction can not be substantiated recognition snatch him by torture or coercion, which is forbidden by law and forbidden to resort to him has witnessed the twentieth century boom in Applied and reflected the boom on all aspects of life in the community so that crime shifted from traditional forms and become a crime science used in the commission of the means of modern scientific , Crime content did not differ over time, but which differed Hoalssalib used in the commission