In infrared photography, infrared filters are used to capture the near-infrared spectrum. Digital cameras often use infrared blockers. Cheaper digital cameras and camera phones have less effective filters and can "see" intense near-infrared, appearing as a bright purple-white color. This is especially pronounced when taking pictures of subjects near IR-bright areas (such as near a lamp), where the resulting infrared interference can wash out the image. There is also a technique called 'T-ray' imaging, which is imaging using far-infrared or terahertz radiation. Lack of bright sources can make terahertz photography more challenging than most other infrared imaging techniques. Recently T-ray imaging has been of considerable interest due to a number of new developments such as terahertz time-domain spectroscopy.
In infrared photography , infrared filters are used to capture the near - infrared spectrum . Digital cameras often use infrared blockers . Cheaper digital cameras and camera phones have less effective filters and can " see " intense near - infrared , appearing as a bright purple - white color . This is especially pronounced when taking pictures of subjects near IR - bright areas ( such as near a lamp ) , where the resulting infrared interference can wash out the image . There is also a technique called ' T - ray ' imaging , which is imaging using far - infrared or terahertz radiation . Lack of bright sources can make terahertz photography more challenging than most other infrared imaging techniques . Recently T - ray imaging has been of considerable interest due to a number of new developments such as terahertz time - domain spectroscopy .
What is a notable recent development in T-ray imaging?
What is a notable recent development in T - ray imaging ?
terahertz time-domain spectroscopy
terahertz time-domain spectroscopy