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  1. www.britannica.com › science › ultraviolet-radiationUltraviolet radiation | Definition, Examples, Effects,...

    Aug 6, 2024 · Ultraviolet radiation lies between wavelengths of about 400 nanometres (1 nanometre [nm] is 10 −9 metre) on the visible-light side and about 10 nm on the X-ray side, though some authorities extend the short-wavelength limit to 4 nm. In physics, ultraviolet radiation is traditionally divided into four regions: near (400–300 nm ...

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  3. en.wikipedia.org › wiki › Fourier_seriesFourier series - Wikipedia

    4 days ago · A square wave (represented as the blue dot) is approximated by its sixth partial sum (represented as the purple dot), formed by summing the first six terms (represented as arrows) of the square wave's Fourier series.

  4. thepublicsradio.org › npr › tahitis-waves-are-a-matter-of-life-and-death-forTahiti’s waves are a matter of ‘life and death’ for Olympic...

    Jul 29, 2024 · This is the second Olympics to feature surfing — with Hopkins and others beginning on the weekend — but it’s the first time competitors are riding waves that are a matter of “life or death,” according to professional big wave surfer Garrett McNamara.

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  6. orionmagazine.org › article › vanishing-coastlines-interview-rosanna-xiaVisions for Our Vanishing Coastlines - Orion Magazine

    2 days ago · Visions for Our Vanishing Coastlines. A conversation about oceans, eco-grief, and shifting perspectives with journalist Rosanna Xia. ... It was when environmental reporter Robert Sollen said of the massive 1969 Santa Barbara oil spill, “the waves, so heavy and lubricated with oil, had lost their rhythmic crash.”

  7. www.semanticscholar.org › paper › Tunable-Hyperuniformity-in-Cellular-StructuresTunable Hyperuniformity in Cellular Structures - Semantic Scholar

    Aug 16, 2024 · Hyperuniform materials, characterized by their suppressed density fluctuations and vanishing structure factors as the wave number approaches zero, represent a unique state of matter that straddles the boundary between order and randomness. These materials exhibit exceptional optical, mechanical, and acoustic properties, making them of great interest in materials science and engineering.

  8. bgr.com › science › climate-change-likely-to-blame-for-billions-of-crabs-vanishingClimate change likely to blame for billions of crabs vanishing in...

    12 hours ago · Billions of crabs have been vanishing from the Bering Sea near Alaska since 2022. ... Marine heat waves that hit during years like 2018 and 2019 would have been especially deadly to the crabs.

  9. wutheringdiary.com › characters › zhezhiZhezhi Build and Best Guide Wuthering Waves

    1 day ago · The Wuthering Waves Zhezhi Build is now complete! It includes the best Echoes, top-tier Weapons, Upgrade Materials, Resonance Chain recommendations, and the optimal team setup for Zhezhi