What does ALS stand for in the context of crime scene investigation?

In the context of crime scene investigation, ALS stands for Alternate Light Source. This technique involves the use of specific wavelengths of light to enhance the visibility of various types of evidence that may not be easily seen under regular lighting conditions. By utilizing different colors and frequencies of light, investigators can reveal latent fingerprints, bodily fluids, or other trace evidence that may be crucial to a case.

Alternate Light Sources are essential tools in forensic science, as they increase the likelihood of discovering important evidence that could provide leads or support for investigations. This capability is vital in crime scene analysis, where every detail can contribute to the overall understanding of the event being investigated.