「ngClass 動的クラス制御」 #angular #shorts

The Daily Spectrum on Instagram: "🔄 The Hidden Law That Keeps Our Universe in Motion What you’re seeing here is angular momentum conservation in action. In a closed system, energy doesn’t vanish — it transforms, conserving motion. The moment of inertia (object’s resistance to change in rotation) plays a big role — spread mass out = slow spin, pull it in = faster spin. This is why ice skaters spin faster when they pull their arms in, and why planets orbit the way they do. From atoms to galaxies,