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Science
Composite metalens enables distortion-free imaging over a wide field of view.
(a) Singlet metalenses undergoes large barrel distortion. (b) Composite metalens effectively eliminates barrel distortion. (c,d) Raytracing modeling of (c) singlets and (d) composite metalens. The angle of incidence of light (in air) varies between 0° and 70° in 10° steps. Credit: Hanyu Zheng et al. In a recent study, researchers developed a composite metalens that enables distortion-free imaging. The study,…
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Earth
Geographer presents new risk model that offers a more nuanced view of complex crises
Stages of the multiple stressor framework. Credit: One Earth (2024). DOI: 10.1016/j.oneear.2024.09.006 We live in a time of multiple crises: climate disasters, pandemics, species extinctions, and violent conflicts. Researchers and policymakers around the world are searching for ways to appropriately respond to this multi-headed monster. Easier said than done. “Systemic risks are increasingly concentrated in the Anthropocene, the era of…
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Space & Cosmos
Hubble captures a new view of galaxy M90
This eye-catching image gives us a new perspective on the spiral galaxy Messier 90 from the NASA/ESA Hubble Space Telescope. Credit: ESA/Hubble & NASA, D. Thilker, J This NASA/ESA Hubble Space Telescope image shows the impressive spiral galaxy Messier 90 (M90, NGC 4569) in the constellation of Virgo. In 2019, Hubble released an image of M90 created using Wide Field…
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