🔍 Key Concepts

• Thermal imaging vs ultraviolet (UV) detection – which part of the electromagnetic spectrum does a thermal imager use? • Contact vs non-contact temperature measurement – does a thermal imager have to touch the equipment? • Purpose of thermographic (infrared) analysis in detecting hot spots or abnormal heating patterns.

💭 Think About

• Think about what firefighters and surveyors see on a thermal camera: are they viewing heat or another kind of light? • Ask yourself whether a "thermo graphic" survey is designed to be done from a safe distance or by touching potentially hot or energized equipment. • Consider the basic definition of "infrared" and how it relates to heat energy compared to "ultraviolet".

✅ Before You Answer

• Confirm whether thermal imagers operate in the infrared or ultraviolet spectrum. • Decide if direct physical contact is needed for a camera-style imager to read temperature patterns. • Match the correct combination of spectrum (infrared/ultraviolet) and contact method (contact/non-contact) before choosing an answer.