https://knowmorestuff.com/ Good questions, checked answers, fewer fact-shaped souvenirs. en Sat, 10 Oct 2026 09:00:00 GMT https://knowmorestuff.com/why-sunsets-are-red-and-orange/https://knowmorestuff.com/why-sunsets-are-red-and-orange/Sat, 10 Oct 2026 09:00:00 GMTSunsets look red or orange because low-angle sunlight travels through more atmosphere, allowing more short-wavelength blue light to scatter out of the… https://knowmorestuff.com/why-blue-light-scatters-more-than-red/https://knowmorestuff.com/why-blue-light-scatters-more-than-red/Tue, 08 Sep 2026 09:00:00 GMTBlue light scatters more strongly than red in clear air because bound electrical charges in air molecules respond to the light's oscillating electric field. https://knowmorestuff.com/why-the-sky-changes-color/https://knowmorestuff.com/why-the-sky-changes-color/Sat, 05 Sep 2026 09:00:00 GMTThe sky changes color as sunlight travels through different lengths of atmosphere and meets molecules, droplets, crystals, and aerosols. https://knowmorestuff.com/why-is-the-sky-blue/https://knowmorestuff.com/why-is-the-sky-blue/Sun, 19 Jul 2026 09:00:00 GMTThe daytime sky looks blue mainly because air molecules Rayleigh-scatter shorter visible wavelengths more strongly than longer ones. https://knowmorestuff.com/why-time-zones-zigzag/https://knowmorestuff.com/why-time-zones-zigzag/Sun, 19 Jul 2026 09:00:00 GMTTime zones zigzag because civil time is a political and social agreement, not a direct longitude readout. https://knowmorestuff.com/how-qr-codes-work/https://knowmorestuff.com/how-qr-codes-work/Sun, 19 Jul 2026 09:00:00 GMTA QR code stores bits in a two-dimensional grid of dark and light modules. https://knowmorestuff.com/why-cats-purr/https://knowmorestuff.com/why-cats-purr/Sun, 19 Jul 2026 09:00:00 GMTCats purr by generating low-frequency vibration in the larynx during both inhalation and exhalation, but the exact control mechanism remains under study.