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You are here: Home / Forensic Sciences / Alternate Light Source (ALS)

Alternate Light Source (ALS)

1 September 2014 da admin Leave a Comment

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Alternate Light Source (ALS): It is becoming more commonplace for investigators to examine any likely surfaces (doors, doorknobs, windows, railings, etc.) with an alternate light source.

These are laser or LED devices that emit a particular wavelength, or spectrum, of light.

Some devices have different filters to provide a variety of spectra that can be photographed or further processed with powders or dye stains.

For example, investigators may use a blue light with an orange filter to find latent prints on desks, chairs, computer equipment or other objects at the scene of a break-in.

Source: www.forensicsciencesimplified.org

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