This document discusses various imaging modalities including visible light cameras, infrared cameras, thermal imaging, x-ray imaging, ultrasound imaging, magnetic resonance imaging, magnetic field imaging, satellite imaging, and gravity imaging. Examples of images from each modality are provided such as cable car photographs, thermograms, satellite images in infrared and visible bands, ultrasound scans, x-rays, CT scans, ground penetrating radar images, and MRI scans. The uses of these imaging techniques in areas like remote sensing, weather observation, medical diagnosis, and automated visual inspection are also outlined.