SCIENCE | HISTORY | FACTS | EXPERIMENT on Instagram: "At first glance, this looks like a visual illusion — but it’s actually pure physics and human perception working together. When an object spins fast enough, our eyes and brain stop seeing individual positions and start seeing an average shape. 1️⃣ Persistence of Vision: Your eyes retain images for a fraction of a second. When something spins rapidly, those images overlap, creating a smooth, continuous form instead of separate frames. 2️⃣ Moti

SCIENCE | HISTORY | FACTS | EXPERIMENT on Instagram: "Your smartphone battery looks simple from the outside, but inside it’s a carefully engineered chemical system powering your entire digital life. Most modern phones use lithium-ion batteries, and here’s what’s actually inside them: 🔹 Anode (Negative Side): Usually made of graphite. This is where lithium ions are stored when your phone is fully charged. 🔹 Cathode (Positive Side): Made from lithium metal oxides (like lithium cobalt oxide). Thi