Podcast
Questions and Answers
What was discovered in the 1970's regarding the use of lasers?
What was discovered in the 1970's regarding the use of lasers?
- Lasers are a form of coherent light
- Lasers could be used to detect latent fingerprints on rough surfaces
- Lasers could be used as an inexpensive alternative to forensic light sources
- Illuminating certain items with lasers would cause them to fluoresce or stand out in contrast (correct)
What is an Alternative Light Source (ALS)?
What is an Alternative Light Source (ALS)?
- A type of forensic light source that uses white light with filters to search for latent fingerprints
- Another term for a forensic light source (FLS)
- A more expensive alternative to forensic lasers developed in the mid-1980s
- A type of forensic light source that uses a variety of band pass filters to provide a high intensity beam of non-coherent light (correct)
What is a Forensic Light Source (FLS)?
What is a Forensic Light Source (FLS)?
- A type of light source that uses lasers to illuminate items and cause them to fluoresce
- An inexpensive light source that filters white light to enable the search for latent fingerprints on rough surfaces (correct)
- Another term for an Alternative Light Source (ALS)
- A more expensive light source used in forensics that is an alternative to lasers
What is the relationship between lasers and coherent light?
What is the relationship between lasers and coherent light?
Which of the following is NOT a type of forensic light source mentioned in the text?
Which of the following is NOT a type of forensic light source mentioned in the text?
What is the process called when an object converts one wavelength of radiant energy to another wavelength?
What is the process called when an object converts one wavelength of radiant energy to another wavelength?
What is the difference between fluorescence and phosphorescence?
What is the difference between fluorescence and phosphorescence?
What is the range of wavelengths that our eyes perceive as white light?
What is the range of wavelengths that our eyes perceive as white light?
What happens when a narrow beam of white light is passed through a prism?
What happens when a narrow beam of white light is passed through a prism?
What is the key difference between the subtractive and additive color systems?
What is the key difference between the subtractive and additive color systems?
Which color system describes how we see color in paints?
Which color system describes how we see color in paints?
Which of the following is NOT an artificial source of continuous radiation?
Which of the following is NOT an artificial source of continuous radiation?
What is a key advantage of using a short duration (flash unit) light source?
What is a key advantage of using a short duration (flash unit) light source?
Which type of ultraviolet (UV) lamp is used for sterilizing air and work areas?
Which type of ultraviolet (UV) lamp is used for sterilizing air and work areas?
What does the acronym 'LASER' stand for?
What does the acronym 'LASER' stand for?
Which type of ultraviolet (UV) lamp is commonly used for chemical analysis and industrial applications?
Which type of ultraviolet (UV) lamp is commonly used for chemical analysis and industrial applications?
In a cloudy and dull environment, what is the visibility of distant objects like?
In a cloudy and dull environment, what is the visibility of distant objects like?
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