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5 results for “water”
- The Perpetually Curious! › Canonical › Engineering & TechnologyArticle
🚂 Echoes of Steam, Currents of Steel: Train Engines and the Rise of High-Speed Motion
From section: 🛢️ Diesel arrives: internal combustion on the railsDiesel engines were generally more efficient than steam locomotives, required less day-to-day servicing, and did not depend on frequent water stops. The diesel fuel inside these locomotives also begins in the wider world of petroleum refining, where crude oil is separated and processed into usable fuel streams.
- The Perpetually Curious! › Canonical › Engineering & TechnologyArticle
🏭 Petroleum Refining: The Process Behind Heat, Pressure, and Design
From section: 🛢️ Crude oil arrives: The beginning of a long transformationBefore any major transformation can occur, the crude is desalted. It is typically heated to about 200 to 300 degrees Fahrenheit (about 100 to 150 degrees Celsius) and mixed with fresh water so that dissolved salts and fine solids can migrate into the water phase and be removed.
- The Perpetually Curious! › Canonical › Engineering & TechnologyArticle
🧪 The Making of Toothpaste: The Subtle Science Behind a Daily Ritual
From section: 🧪 What lives inside the tube and why each ingredient mattersHumectants such as sorbitol or glycerin help the paste retain moisture and maintain a smooth texture. Water is also present and acts as a solvent and dispersion medium. …
- The Perpetually Curious! › Canonical › Engineering & TechnologyArticle
🖋️ Printing Ink: The Science and Living History Behind the Printed Page
From section: 🖨️ Ink in motion: Printing technologies and their demandsOffset lithography uses plates, rollers, and a rubber blanket to transfer ink to paper. Offset inks must balance viscosity, tack, and interaction with water based fountain solutions. They are often paste like and rely on absorption and oxidation for drying.
- The Perpetually Curious! › Canonical › Engineering & TechnologyArticle
🧪 The Quiet Alchemy of Pencil Making: How an Everyday Tool Comes into Being
From section: 🧪 Forming the core: Where graphite and clay become a writing lineOnce graphite and clay have been prepared, they are combined with water to form a smooth, uniform paste. This mixture is kneaded until it reaches a consistent texture. …