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E-Mail IMAGE: A new MIT-fabricated metalens shifts focus without tilting, shifting, or otherwise moving. The design may enable miniature zoom lenses for drones, cellphones, or night-vision goggles. view more Credit: Image courtesy of Tian Gu, et al Polished glass has been at the center of imaging systems for centuries. Their precise curvature enables lenses to focus light and produce sharp images, whether the object in view is a single cell, the page of a book, or a far-off galaxy. Changing focus to see clearly at all these scales typically requires physically moving a lens, by tilting, sliding, or otherwise shifting the lens, usually with the help of mechanical parts that add to the bulk of microscopes and telescopes. ....
New 'metalens' shifts focus without tilting or moving scienceblog.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from scienceblog.com Daily Mail and Mail on Sunday newspapers.
New "metalens" shifts focus without tilting or moving miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.
Letters to the Editor January 23, 2021 January 23, 2021 00:02 IST Updated: January 23, 2021 00:02 IST Updated: Share Article Housework valuation In India, even in today’s world, there is a demarcation between the ‘work done by women’ and ‘work done by men’ This attitude of men and society in general is what makes it difficult to undertake a valuation of housework, moreso when there are women who feel that what they do is not worthy of remuneration. In this context, to bring in a prenupital contract on this issue would be difficult. In a fair valuation, perhaps women need to take pride in the housework they are doing. In addition, housework should not be considered as ‘work done only by women’. ....
Darshan of Vivekananda is very simple we can follow Brahmacharya while staying at home jagran.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from jagran.com Daily Mail and Mail on Sunday newspapers.