{"id":2865,"date":"2025-01-08T09:55:40","date_gmt":"2025-01-08T09:55:40","guid":{"rendered":"https:\/\/bullseye.ac\/blog\/?p=2865"},"modified":"2025-01-08T09:55:43","modified_gmt":"2025-01-08T09:55:43","slug":"the-role-of-polarisation-in-modern-atmospheric-research","status":"publish","type":"post","link":"https:\/\/bullseye.ac\/blog\/book-reviews-summary\/the-role-of-polarisation-in-modern-atmospheric-research\/","title":{"rendered":"The Role of Polarisation in Modern Atmospheric Research"},"content":{"rendered":"\n

Number of words: 359<\/p>\n\n\n\n

US scientists have developed a highly compact and portable camera that can capture polarised light, help in study atmospheric chemistry and used to detect camouflaged objects.Polarisation, the direction in which light vibrates, is invisible to the human eye (but visible to some species of shrimp and insects). But it provides a great deal of information about the objects with which it interacts.Cameras that see polarised light are currently used to detect material stress, enhance contrast for object detection, and analyse surface quality for dents or scratches.<\/p>\n\n\n\n

The miniature camera \u2014 about the size of a thumb \u2014 could find a place in the vision systems of autonomous vehicles, onboard planes or satellites to study atmospheric chemistry, or be used to detect camouflaged objects.Based on that change, polarisation can help us in the 3D reconstruction of an object, to estimate its depth, texture and shape, and to distinguish man-made objects from natural ones, even if they\u2019re the same shape and colour,\u201d he said.<\/p>\n\n\n\n

To unlock that powerful world of polarisation, the researchers harnessed the potential of metasurfaces, nanoscale structures that interact with light at wavelength size-scales.\u201cIf we want to measure the light\u2019s full polarization state, we need to take several pictures along different polarization directions,\u201d said Noah Rubin, first author of the study.<\/p>\n\n\n\n

Previous devices either used moving parts or sent light along multiple paths to acquire the multiple images, resulting in bulky optics. But this approach does not measure the full polarisation state and requires a non-standard imaging sensor. In this work, we were able to take all of the optics needed and integrate them in a single, simple device with a metasurface,\u201d he added.<\/p>\n\n\n\n

According to the study, published in the journal Science, the device is about two centimetres in length and no more complicated than a camera on a smartphone. With an attached lens and protective case, the device is about the size of a small lunch box.The researchers tested the camera to show defects in injection-moulded plastic objects, took it outside to film the polarisation off car windshields and even took selfies to demonstrate how a polarisation camera can visualise the 3D contours of a face.<\/p>\n\n\n\n

Excerpted fromhttps:\/\/indianexpress.com\/article\/technology\/science\/researchers-develop-camera-to-capture-polarised-light-study-atmospheric-chemistry-5821045\/lite\/<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Number of words: 359 US scientists have developed a highly compact and portable camera that can capture polarised light, help in study atmospheric chemistry and used to detect camouflaged objects.Polarisation, the direction in which light vibrates, is invisible to the human eye (but visible to some species of shrimp and insects). But it provides a … Read more<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","_uag_custom_page_level_css":"","footnotes":""},"categories":[49],"tags":[],"acf":[],"yoast_head":"\nThe Role of Polarisation in Modern Atmospheric Research - BullsEye<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bullseye.ac\/blog\/book-reviews-summary\/the-role-of-polarisation-in-modern-atmospheric-research\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Role of Polarisation in Modern Atmospheric Research - BullsEye\" \/>\n<meta property=\"og:description\" content=\"Number of words: 359 US scientists have developed a highly compact and portable camera that can capture polarised light, help in study atmospheric chemistry and used to detect camouflaged objects.Polarisation, the direction in which light vibrates, is invisible to the human eye (but visible to some species of shrimp and insects). But it provides a ... 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