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A comment on The hunt for Marie Curie's radioactive fingerprints in Paris. Parent comment

Re:The hunt for Marie Curie's radioactive fingerprints in Paris by perihelions on Thursday June 12, 2025 @05:20AM (#44255595)
There's viable optics up through x-rays; though they don't refract, they can still reflect at shallow angles,

https://www.cosmos.esa.int/web/xmm-newton/technical-details-...

https://en.wikipedia.org/wiki/Wolter_telescope

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