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Articles

Metal-filtering sponge removes lead from water

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The Best Pens for 2023: Gel, Ballpoint, Rollerball, and Fountain Pens

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Hydrogel interfaces for merging humans and machines

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First Eco-Friendly Filter Removing 'Microplastics in Water,'

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Pilot FriXion Erasable Pens: A Comprehensive Guide

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Best Pens for 2022: Gel, Ballpoint, Rollerball, and Fountain Pens

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What Is the Transparent Material at the End of a Gel Pen Refill?

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Irish teen invents magnetic liquid trap to remove microplastics in water (2019)

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Rollerball Pens of 2021

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Rollerball pens that use fountain pen ink

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New suction-cup system spins water to stick to rough surfaces

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Spiders and ants inspire metal that won't sink

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A Permanently Magnetic Liquid

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Pen Refills Guide

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Hacking the Casio F-91W to Handle 1000 Psi

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Can Repelling Magnets Replace the Spring in a Pogo Stick?

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Fountain pen inks: the good, the bad, and the ugly (2011)

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New lubricated mussel-proof coating

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Paper Centrifuge

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Ephemeral is developing tattoo ink designed to disappear after a year

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Polymagnets

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Show HN: I spent a year making an electro-mechanical prototype of a liquid clock

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Cow Magnets

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Ferrolic

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Spraying Magnetic Stripe Cards with Iron Filings

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Laser-generated surface structures create extremely water-repellent metals

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What Happens When You Drop A Magnet Inside A Copper Tube [video]

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Next Time Your Mom Says Don't Go Out in The Rain, Spray Yourself With This

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Scientist Creates Self-Filling Water Bottle

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Nobel prizewinner: We are running out of helium

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Sharpie reinvents the pen with liquid pencil

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Black goo is the new oscilloscope: Love Hultén's ferrofluid synths

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Best Pens for 2024: Gel, Ballpoint, Rollerball, and Fountain Pens

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