Chapter 9

Explain how conversion of light is utilized as a search tool.

Items that would have been difficult to see undergo fluorescence when exposed to varying wavelengths of light energy, thus allowing evidence to be seen, photographed, and collected. 

What is the primary difference between a broadband blue light and a standard ALS?

Broadband blue light is an initial search tool and only gives off one wavelength

ALS offers a wider variety of wavelengths overall

For what type of evidence examinations is RUVIS best suited?

Allows the visualization of latent prints before dusting or development

What two primary types of evidence respond to IR light?

Bloodstains and soot associated with GSR

Is there a specific wavelength (NM) of light that should be used when searching for hairs and fibers?

No, the technician should consider a wide range of wavelengths, as no one wavelength affects every single dye encountered.

Some red and blond hairs may fluoresce