The images can be taken in visible light, as well as near - infrared and infrared light — wavelengths that can take thermal images of fires even when it's dark. (businessinsider.com)
The device slips onto the back of your phone like a protective case and displays a live thermal image from your phone's screen. (realtormag.realtor.org)
Three thermal images show a series of Kilauea eruptions earlier this year. (discovermagazine.com)