Ever wonder how a single drop of blood, a piece of hair, or a fingerprint fragment left on a glass could help solve a crime? What might seem like magic in crime shows is the power of science in action. Forensic science is a blend of science and criminal investigations to uncover truths, find culprits, and administer justice. Some of the best science colleges in Nashik include courses such as Forensic Science in Applied Science. This would help future forensic scientists innovate in the subject with a good basis of knowledge in it.
The word ‘forensics’ comes from the Latin term forensics, which means ‘before the forum’ or court. In modern times, forensic science can be defined as the use of scientific approaches and techniques to investigate crimes and provide evidence for trials. Some of the best forensic science colleges in Nashik offer undergraduate and postgraduate courses in this field to train future professionals in forensic science.
History and Meaning of Forensic Science
Perhaps one of the most intriguing aspects of forensic science is the idea put forward by the French Criminologist Edmond Locard which is famously known as Locard’s Exchange Principle. It is based on the premise that “every contact leaves a trace”. Whenever someone enters a crime scene, he or she takes something from the scene and leaves something behind. Some of the items left at the scene can include fingerprints, hair, fibres, blood, DNA, shoe impression or microscopic particles.
Role of DNA Analysis in Forensic Science
Another powerful tool for forensic scientists is DNA analysis. No two individuals except identical twins share the same genetic makeup. By conducting tests on the biological material, including blood, saliva, hair root or skin cells, forensic scientists have identified people to great accuracy. The technology has helped solve many criminal cases. It has also helped exonerate some innocent people who were wrongfully incarcerated. Fingerprints constitute one of the earliest and reliable methods of identification. The ridge pattern on the fingertips is unique and remains constant during the lifetime of the individual. State-of-the-art techniques involving imaging, chemical processes and computerisation are being used to match fingerprints found at the scene of the crime to the fingerprints of known individuals.
Role of Chemistry in Forensic Science
Chemistry has a significant part in forensic investigation. The forensic chemist analyses the unknown material and traces the evidence to provide answers to the question. The forensic chemist studies the burnt and partly burnt substances to find out the accelerants that have been used to start the fire and to find the trace evidence that provides the answers that cannot be seen by naked eyes. They deal with various things such as illegal drugs, explosives, poisons, gun powder residue, fake medicines, inks, paints, fibres, glass shards, petrochemicals and many other things. By using hyphenated techniques such as Gas Chromatography, Liquid Chromatography, a forensic scientist can tell you precisely about the evidence.
What is Forensic Toxicology?
Another significant aspect of forensic science is forensic toxicology. Forensic toxicologists analyse the biological materials to find the drug, alcohol, poison and toxic substance. It helps to determine the cause of death, poisoning and impaired drivers. Different techniques like Chromatography and spectroscopy to detect the presence of substances in trace quantities.
Other Emerging Branches of Forensic Science
Digital forensics has turned out to be one of the most rapidly developing fields of forensic science. With the present-day technologically advanced world, smartphones, computers, social media accounts and cloud storage services can store evidence. Specialists in digital forensics can recover deleted data, study communications, track down cybercrimes and uncover hidden evidence which is important for investigations.
Environmental forensics is the use of scientific techniques to study cases of pollution and illegal dumping of wastes into the environment. Chemical signatures and contaminants enable specialists to pinpoint pollution sources.
The importance of forensics goes beyond just criminal investigations. It is used in disaster victim identification, wildlife crime investigations, counterfeit goods detection and health hazards. The progress of science like artificial intelligence, nanotechnology, portable analysis and advanced DNA sequencing continues to push the boundaries of forensic investigations.
Understanding Forensic Ballistics
Not only do firearms leave bullet holes, but they also leave much more information behind. Forensic ballistics studies the science behind firearms, bullets, cartridge cases and gunshot residue. There are unique microscopic marks left behind on each bullet and cartridge case fired by any gun. These marks can be analysed using comparison microscopes to see whether a bullet was fired from a specific firearm. Ballistics scientists can make conclusions about the distance of fire, the trajectory of bullet and even the nature of shootings like homicide, suicide or accidental shooting.
Role of Physics in Forensic Science
When one thinks of crime investigations, Physics is one of the subjects that may not occur to people’s minds. However, physics plays a crucial role in crime investigation. The application of forensic physics relies heavily on the law of motion, force, energy and mechanics to help in the investigation of crime scenes such as automobile accident reconstruction. Forensic physics uses methods like skid marks and impact patterns to reconstruct automobile accidents, trajectories of bullets, movement of bloodstains, broken glass, and explosions. With the use of laser scanning and three-dimensional crime scene reconstruction, forensic physicists are able to reconstruct an event in great detail so that investigators can visualise how an event took place.
Understanding Forensic Medicine
Forensic medicine involves the application of medicine in criminal investigations. Forensic pathology entails conducting an autopsy to establish the cause and manner of death in a deceased individual. It also involves the meticulous study of the victim’s injuries, disease, toxicological findings and pathological changes to answer critical medico-legal questions. Forensic doctors examine victims of assault, sexual offences, domestic violence and road traffic accidents. The medical findings are sometimes used in court as crucial evidence and science speaks on behalf of victims in such cases.
Conclusion
Forensic science may appear magical, but it is all about observing things carefully, understanding the facts scientifically and analysing evidence scientifically. Evidence is always evidence of something, and it is the job of forensics scientists to interpret that evidence scientifically. The role of forensic science scientists holding a B.Sc in Forensic Science is very important in revealing the truth, in establishing justice, and improving the public confidence in the legal process. Forensic science reminds us that in a world where there may be complexities and deceptions involved in crimes; the science has its own magic in the form of finding the hidden truths from the smallest clue.