| Discover What Infrared is and How it | | | | photography. Nowadays, infrared is being used by |
| WorksInfrared or IR radiation is electromagnetic | | | | police or security industry to capture criminals or |
| radiation of wavelength that is longer than visible | | | | better protect some valuable property using |
| light, yet shorter than microwave radiation. | | | | infrared security cameras.Infrared cameras |
| Infrared light was discovered in the yearly 1800 | | | | produce an image of a warm object. Warmer |
| by English astronomer William Herschel. The main | | | | areas have different colors than cooler ones. |
| intention was to use infrared for imaging and | | | | |