Forensic Science

# Forensic Science

## Overview
Forensic science is the application of scientific methods and principles to legal investigations. It serves as a bridge between the physical sciences and the justice system, ensuring objective analysis of evidence.

## Core Disciplines
### 1. Forensic Biology & DNA
Focuses on the analysis of biological fluids and tissues. Using STR profiling, forensic biologists can identify individuals with high statistical confidence. Techniques involve PCR amplification and capillary electrophoresis.

### 2. Forensic Toxicology
Investigates the presence of chemicals, drugs, and poisons in the body. GC and LCMS are standard methodologies for identifying exogenous substances in blood, urine, and vitreous humor. This is critical in determining cause of death in suspicious cases.

### 3. Trace Evidence & Ballistics
Analysis of microscopic materials (hairs, fibers, glass) and firearm discharge residues. Ballistics experts examine striations on projectiles to match bullets to specific firearms, utilizing comparison microscopy.

### 4. Forensic Pathology
Deals with the medical determination of cause and manner of death. Pathologists estimate the PMI by observing rigor mortis, livor mortis, and insect succession patterns (forensic entomology).

## Modern Digital Forensics
Evolution of the field now includes the recovery and investigation of material found in digital devices (smartphones, cloud storage, encrypted drives). This requires adherence to strict chain-of-custody protocols to ensure evidence remains admissible in court.

## Ethical & Legal Standards
All forensic findings must satisfy the Daubert Standard or Frye Standard, ensuring that the methodology is peer-reviewed, testable, and has a known error rate.