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Maunakea telescope helps find astronomical 'gold mines'


University of Hawaiʻi
Clockwise from left, Gemini’s Crossbow, Wolf’s Paw, Microscope Lens and Dragon’s Kite (Photo credit: R. Hurt (IPAC/Caltech)/The GraL Collaboration)
Astronomers at the W. M. Keck Observatory on Maunakea are part of a team that came across a very rare find nestled billions of light years away that could help to quantify the universe. Researchers discovered a dozen “quadruply imaged quasars,” and only 50 “quads” have been found within the past 40 years.
Quasars are extremely luminous objects powered by supermassive black holes that are feasting on material surrounding it. A quadruply imaged quasar happens when the gravity of a massive galaxy in front of it bends and magnifies the light of the quasar behind it, and splits the quasar’s single image into four. ....

Daniel Stern , University Of Hawai , Swiss Army , Propulsion Laboratory , European Space Agency Gaia , Microscope Lens , Gral Collaboration , Keck Observatory , Dragon Kite , Astrophysical Journal , European Space Agency , டேனியல் கடுமையான , பல்கலைக்கழகம் ஆஃப் ஹவாய் , சுவிஸ் இராணுவம் , ப்ரொபல்ஶந் ஆய்வகம் , நுண்ணோக்கி லென்ஸ் , கிரால் இணைந்து , கேக்க் கண்காணிப்பு , டிராகன் காத்தாடி , வானியற்பியல் இதழ் ,

MicroLED Displays: Measuring and Correcting Uniformity


MicroLEDs continually demonstrate performance benefits for displays, including higher contrast and brightness, greater pixel density and wider color gamut. MicroLEDs facilitate enhanced visual performance in ambient light conditions, from complete darkness to broad daylight and when viewed from multiple viewing angles.
These characteristics make microLEDs particularly attractive for applications including mobile phones and smart-watches, automotive display panels, augmented and mixed reality (AR/MR) headsets and digital signage.
Manufacturing high quality microLED panels is a persistent challenge that often limits production efficiency. Before manufacturers can deliver commercially viable microLED display products, there are certain quality issues to consider.
The Challenge of MicroLED Display Uniformity ....

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