Visible light imaging is a family of methods that acquire spatially resolved information using electromagnetic radiation in the 400–700 nm range, detected by human-vision–matched sensors such as CCD or CMOS arrays. It encompasses bright-field microscopy, color and monochrome photography, and machine-vision systems that rely on reflected, transmitted, or emitted visible photons to generate contrast based on absorption, scattering, and fluorescence within this spectral band. These methods are widely used for noninvasive inspection, documentation, and quantitative analysis, often combined with controlled illumination, optical filters, and computational processing to enhance signal-to-noise ratio, extract morphological or spectral features, and enable automated measurement or classification.
A research team led by UCLA and the University of Rochester has demonstrated a promising evolution of an imaging system designed to capture details within "complex media," which scatter light, from depicting structures inside ...
Optics & Photonics
12 hours ago
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A new airborne imaging approach can reliably detect unexploded weapons that lie in shallow coastal waters and remain an ongoing hazard to public safety, marine ecosystems and infrastructure worldwide. By combining advanced ...
Environment
Jul 2, 2026
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206
Scientists have demonstrated a noninvasive technique that uses light to reveal the hidden contents of chicken eggs, potentially helping to curb the meat industry's practice of killing billions of male chicks at birth. The ...
Biotechnology
Jun 19, 2026
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Modern fluorescence microscopy can generate images of living cells as stunning to look at as they are informative to study. For techniques like fluorescence lifetime imaging microscopy (FLIM), those images provide a window ...
Optics & Photonics
Jun 10, 2026
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Captured by the multispectral imager instrument on NASA's Psyche mission, this is an enhanced-color view of the large double-ring crater Huygens (upper right; about 290 miles, or 470 kilometers, in diameter) and the surrounding ...
Space Exploration
May 20, 2026
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This view of a crescent Mars was captured on May 15, 2026, at about 5:03 a.m. PDT by NASA's Psyche mission as it approached the planet for a gravity assist. Captured by the spacecraft's multispectral imager instrument, this ...
Space Exploration
May 20, 2026
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Pairs of correlated or entangled photons are a foundational resource in quantum optics. They are most commonly produced through spontaneous parametric down-conversion (SPDC), a nonlinear optical process that typically relies ...
Optics & Photonics
May 15, 2026
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Maps can show more than just where things are—they can also show how things change. New maps of artificial light reveal a planet that has been reshaping its nights through patterns of brightening and dimming.
Planetary Sciences
May 15, 2026
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89
At this point in NASA's human spaceflight story, researchers have a substantial amount of material—documents, artifacts and images—with which to tell the stories of past flights to space. But with NASA's Artemis II mission ...
Space Exploration
Apr 13, 2026
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76
New research from Monash University and Phillip Island Nature Parks is using thermal and infrared drone technology to spot marine debris entanglements in Australian fur seals. Entanglement is an escalating threat to marine ...
Ecology
Mar 10, 2026
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