SCIENCE | HISTORY | FACTS | EXPERIMENT on Instagram: "Finding the true center of a wooden log might look like guesswork, but it’s actually a precise geometric method used by carpenters, woodturners, and sawmill operators. This video shows a reliable technique that works even when the log isn’t perfectly round. The process starts by identifying two random points on the edge of the log. From each point, straight lines are drawn across the surface toward the opposite side. When these lines intersec

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

E History on Instagram: "This street artist doesn’t touch the canvas directly — instead, he controls a marionette that paints for him. Every string pull becomes a brushstroke. Every movement turns into color, chaos, and control at the same time. What looks like a puppet show slowly reveals a finished painting, created through precision, patience, and performance. The audience isn’t just watching art being made — they’re watching art being performed. It blurs the line between artist and tool. Who

SCIENCE | HISTORY | FACTS | EXPERIMENT on Instagram: "What you’re watching isn’t magic — it’s real-time sound-reactive lighting technology working with extreme precision. Modern lighting systems can analyze audio signals instantly and convert them into perfectly timed light movements. 1️⃣ Sound Capture: Microphones or direct audio feeds capture music, beats, and frequencies in real time. 🎤 2️⃣ Signal Processing: A digital processor breaks the sound into elements like bass, mids, and treble. Eac

SCIENCE | HISTORY | FACTS | EXPERIMENT on Instagram: "China continues to push the boundaries of engineering, and this road-train hybrid is a perfect example. Unlike conventional trains that rely on dedicated tracks, this vehicle runs safely on regular roads, combining the efficiency of rail transport with the flexibility of road vehicles. 1️⃣ Guided Wheels: Special wheels and sensors keep the train perfectly aligned while moving on roads, preventing derailment. 🛞 2️⃣ Lightweight Structure: Usin