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New device measures curved mirrors' absolute shape to within 2 nanometers without touching them

Researchers at AIST have developed a device that measures the absolute surface profile of curved optical elements with high precision without touching them.

Phys.org - latest science and technology news stories · ٢٩ سبتمبر ٢٠٢٦، ٠٨:٤٠ م

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Bangkok declared a ‘disaster zone’ after flooding, as rainstorms shift direction

Capital city submerged in waist-high flood water, while elsewhere Hurricane Nolo threatens Hawaii’s Big Island Bangkok was declared a disaster zone by its city officials towards the end of last week, after streets in Thailand’s capital city were submerged in up to waist-high floo

World news | The Guardian · ٢٨ سبتمبر ٢٠٢٦، ٠٨:١٨ ص