Metal can be a tricky material in the thermography world. Radiant underfloor heating is clearly visible under a concrete floor. The answer to this question is basically the same as the question for walls-no, but a thermal camera might be able to detect something inside the concrete like a pipe or radiant heating that causes a temperature difference on the surface of the concrete. The digital camera sees through the glass to the trees outside, while the thermal camera sees the reflected heat of the photographer.Ĭan thermal imaging see through concrete? The same principle applies to other reflective materials, like polished metal. This is because glass is a highly reflective material, meaning it shows the reflected temperatures of objects rather than letting infrared radiation be transmitted through. If you point a thermal imager at a window, you won’t see anything on the other side of the glass, but you will get a nice reflection of yourself in thermal. Under certain circumstances, thermal imaging can detect objects through fog much more clearly than visible light detectors.įun fact: glass acts like a mirror for infrared radiation. This is one reason why car manufacturers are incorporating thermal imagers into the sensor suites of autonomous vehicles. However, in many circumstances, thermal cameras can penetrate fog much more successfully than visible light cameras or the human eye. The person in the doorway is concealed by smoke in the visible light spectrum, but easily detected by thermal imaging.įog and rain have the potential to severely limit the range of a thermal camera due to the scattering of radiation off water droplets. Soot particles in smoke effectively block visible light, but allow infrared radiation to pass through, letting firefighters or other first responders navigate through smoke-filled environments. Yes, thermal cameras can detect heat through smoke, and are widely used by firefighters for this purpose. Studs inside the wall (vertical lines) are colder than the insulation, causing a temperature difference on the surface of the wall. Building maintenance professionals often use thermal imagers to detect issues like water leaks or missing insulation without needing to tear down walls to assess the problem. However, if something inside the wall causes enough of a temperature difference, a thermal imager will be able to sense it on the surface of the wall. If you point a thermal camera at a wall, it will detect heat from the wall, not what’s behind it. Walls are generally thick enough-and insulated enough-to block any infrared radiation from the other side. No, thermal cameras cannot see through walls, at least not like in the movies. However, we’ll use it as a shorthand in this article.) (Knowledgeable individuals might point out that thermal cameras don’t “see” anything: they detect heat and then assign colors based on the range of temperatures detected by the sensor. What exactly can thermal cameras “see” through? To answer that, here’s a rundown of the most commonly asked questions we receive about what you can and can’t see through using a thermal camera. Popular media has been responsible for a wealth of misinformation throughout the years about thermal-or infrared-imaging. Can Thermal Imaging See Through Walls? And Other Common Questions
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