CPI Thermal Imaging & Infrared Technology 1 — Questions and Answers
Question 1: What does a thermal imaging camera detect to produce its images?
- Reflected visible light
- Infrared radiation emitted by objects (Correct answer)
- Ultraviolet energy from surfaces
- Radio frequency emissions
Correct answer: Infrared radiation emitted by objects
Thermal cameras detect infrared radiation (heat) emitted by all objects and convert it into a visible temperature map.
Question 2: In paranormal investigation, a 'cold spot' captured on thermal imaging is most accurately described as:
- Definitive proof of a spirit presence
- An area of lower thermal radiation compared to the surroundings (Correct answer)
- A malfunction in the camera sensor
- Evidence of electromagnetic interference
Correct answer: An area of lower thermal radiation compared to the surroundings
A cold spot is a localized area registering lower temperature than the ambient environment; it must be documented and cross-referenced with other data before any paranormal conclusion is drawn.
Question 3: What is the primary reason investigators should allow thermal cameras to acclimate before use?
- To charge the battery fully
- To prevent lens condensation that skews readings
- To allow the internal sensor to stabilize to ambient temperature (Correct answer)
- To update the firmware automatically
Correct answer: To allow the internal sensor to stabilize to ambient temperature
Bringing a cold camera into a warm environment causes the sensor to drift until it equilibrates, producing inaccurate temperature readings during that period.
Question 4: Which term describes the temperature difference a thermal camera can distinguish between two adjacent areas?
- Spatial resolution
- Thermal sensitivity (NETD) (Correct answer)
- Emissivity coefficient
- Frame rate
Correct answer: Thermal sensitivity (NETD)
Noise Equivalent Temperature Difference (NETD), expressed in millikelvin, is the minimum temperature contrast the sensor can reliably detect.
Question 5: Why is emissivity an important consideration when interpreting thermal images during an investigation?
- It determines how loud audio anomalies are
- It affects how accurately a surface's true temperature is reported (Correct answer)
- It controls the camera's battery consumption
- It governs the camera's field of view
Correct answer: It affects how accurately a surface's true temperature is reported
Emissivity is the efficiency with which a surface emits infrared energy; shiny or reflective materials have low emissivity and can reflect ambient heat, creating misleading temperature readings.
Question 6: A paranormal investigator notices a bright white human-shaped thermal outline on a wall. The most likely mundane explanation is:
- A residual haunt leaving a thermal impression
- Residual body heat from a person who recently leaned against the wall (Correct answer)
- A malfunction of the camera's white-hot palette
- Electromagnetic radiation from nearby electronics
Correct answer: Residual body heat from a person who recently leaned against the wall
Walls absorb and retain body heat; a person leaning against a surface can leave a warm imprint that persists for minutes, creating a shape that may resemble a figure.
Question 7: Which camera palette setting is most commonly used in paranormal investigations because it offers the highest contrast for spotting temperature anomalies?
- Rainbow
- Iron (Ironbow) (Correct answer)
- White-hot
- Black-hot
Correct answer: Iron (Ironbow)
The Ironbow (Iron) palette maps temperatures to a color gradient from black through red to yellow-white, providing high visual contrast that makes subtle temperature differences easy to spot.
CPI Thermal Imaging & Infrared Technology 1
What does a thermal imaging camera detect to produce its images?