UV Light Flashcards
1
Q
What are the common UV sources
A
Sun Incandescent lights bulbs Flashlights ( some light-emitting diode [LED] flashlights do not possess UV radiation). Electronic flashes (those without a UV blocking filter or coating) UV light sources ALSs (crime lights) Germicidal lamps Tanning tubes
2
Q
UV fluorescence
A
Radiation below 400nm
Used to create or enhance fluorescence
Propels potential evidence into the visible part of the spectrum - 400 - 700nm
FLUORESCENCE WILL STOP WHEN THE UV LIGHT IS REMOVED
3
Q
What are the forensic uses of UV
A
Fingerprint enhancement Forgery and document alterations Fibres and other trace evidence Presence of security fluids e.g. smartwater Bodily fluids Bruises and bite marks Gunshot residue
4
Q
What is black light?
A
