CPI Thermal Imaging & Infrared Technology

Question 1

What does a thermal imaging camera detect to produce its images?

Accepted Answer

Infrared radiation emitted by objects

Answer

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:

Accepted Answer

An area of lower thermal radiation compared to the surroundings

Answer

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?

Accepted Answer

To allow the internal sensor to stabilize to ambient temperature

Answer

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?

Accepted Answer

Thermal sensitivity (NETD)

Answer

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?

Accepted Answer

It affects how accurately a surface's true temperature is reported

Answer

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.

(CPI) Certified Paranormal Investigator Practice Test

(CPI) Certified Paranormal Investigator Practice Test

CPI Thermal Imaging & Infrared Technology