Overview

Eight-year-old Quanta meets a brass coin that refuses to pick heads or tails until she looks at it. A first picture-book step into the strange, true world of quantum physics.Quanta is eight years old. She lives in a lane called Quantum Bazaar with her family of robots: Dadi-Bot the grandmother, Dada-Bot the grandfather who runs the chai stall, Auntie Supi who makes pickles, Auntie Dhooli who sweeps, the sleepy qubit Q0, the loud qubit Q1, and Schro the temple cat who is always fine. One afternoon her grandmother opens an old box in the lab under the chai stall. Inside is a small brass coin. It shimmers. It does not pick heads. It does not pick tails. Quanta stares at it, and the coin snaps to one. She looks again, and it stays. She sets up a fresh coin and the shimmer is back. What did the coin do? Why did looking change it? And why is this not a trick, but the simplest true thing about the world that scientists discovered a hundred years ago? Quanta and the Two-State Coin is the first book in the Quantum Bazaar Series. It is a gentle, accurate, and visually rich introduction to the single most important idea in quantum physics: a qubit can be both zero and one at the same time, until you ask. Asking is what makes the answer appear. Inside the book: A 24-spread picture story set in a fictional Indian temple-town lane. Meet the Family page that introduces every character a child will revisit across the five-book series. A glossary in plain words for state, superposition, measurement, qubit, dewar, and bazaar. A quick quiz, a maze, and three ""Try this at home"" activities a child can do with a real coin and a friend. An About this book section for parents and teachers, with what the story really shows and how it connects to real quantum science. Written by Prof. Santhosh Sivasubramani, Director of the INTRINSIC Lab, Centre for SeNSE, IIT Delhi, and founder of RSL Quantum Private Limited. For curious children aged 5 to 9, and for the grown-ups who read with them. https: //rslquantum.com/read/book-1/

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