The intellectual adventure story of the “double-slit” experiment, showing how a sunbeam split into two paths first challenged our understanding of light and then the nature of reality itself–and continues to almost 200 years later.
Many of the greatest scientific minds have grappled with this experiment. Thomas Young devised it in the early 1800s to show that light behaves like a wave, and in doing so opposed Isaac Newton’s view that light is made of particles. But then Albert Einstein showed that light comes in quanta, or particles. Quantum mechanics was born. This led to a fierce debate between Einstein and Niels Bohr over the nature of reality–subatomic bits of matter and its interaction with light–again as revealed by the double-slit experiment. Richard Feynman held that it embodies the central mystery of the quantum world. Decade after decade, hypothesis after hypothesis, scientists have returned to this ingenious experiment to help them answer deeper and deeper questions about the fabric of the universe.
How can a single particle behave both like a particle and a wave? Does a particle, or indeed reality, exist before we look at it, or does looking create reality, as the textbook “Copenhagen interpretation” of quantum mechanics seems to suggest? How can particles influence each other faster than the speed of light? Is there a place where the quantum world ends and the familiar classical world of our daily lives begins, and if so, can we find it? And if there’s no such place, then does the universe split into two each time a particle goes through the double-slit?
Through Two Doors at Once celebrates the elegant simplicity of an iconic experiment and its profound reach. With his extraordinarily gifted eloquence, Anil Ananthaswamy travels around the world, through history and down to the smallest scales of physical reality we have yet fathomed. It is the most fantastic voyage you can take.
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It contains concave and convex mirrors, prism, glass slabs etc
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PGSA2Z A do it yourself (DIY) science project kit, suitable for class 8-12 physics projects. Demonstrates the concept of electro-magnetism, by transferring electricity without wires. Among our science fair project ideas, at projects for school, we realized that a DIY science project in remote power transmission can be very interesting. In this science project working model students will be able to demonstrate how to transmit power by electromagnetic fields and then reconvert it to electricity for use. This is the same principle being used by wireless chargers in the market. This science project kit also makes an attractive gift for young kids to spark their interest in science. A smart return gift for future explorers.
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Kids enjoy learning the basics of motor applications and its control. The kit can be used for following DIY fun and learning experiments: Battery powered Fan Air push car Beep Alarm / Buzzer Battery powered robot Battery powered Lights Street-light project Demonstration of home supply and appliances Package Includes: 1 dynamo motor 3 V 6v motor -1 pcs LEDs – 10pcs rocker switch – 5pcs MINI Propeller -2pcs 9V Battery Snap to Alligator Clip Power Test Cable – Black + Red -1pcs Alligator Clips Jumper Cable 1 Pair resistor – 4 pcs 9v battery 2pcs 9v battery connector 1pcs 1 meter wire Buzzer – 1pcs
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For demonstrating that white light may be composed from all the spectral colors by rotation o f multi-colored disc . Comprising of a disc 200 mm, mounted on metal stand and driven by belt with the help of driving wheel fitted with a handle, can be clamped on table.
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Easy to play – The same number of balls will swing up on the opposite side and the clicking will go back and forth until it stops… a soothing experience you’ll enjoy. The bright color will brighten up your workspace.Great fun, educational physics demonstrator – The Newton’s cradle is a great invention for both kids and adults,intellectual and elegant decoration for your room and office.Easy assembly is required with this simle and elegant structure – Shining Arch frame made of stainless steel, Stainless metal balls hanging on durable Nylon strings，and Vintage plastic base, can be put on your desk, shelf and more.Whether you are studying physics knowledge, working on complex analysis, or looking for a delicate gift, this Newton Cradle Balance Balls is definitely what you really want.
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“Meet the new Stephen Hawking . . . The Order of Time is a dazzling book.” —The Sunday Times
From the bestselling author of Seven Brief Lessons on Physics, a concise, elegant exploration of time.
Why do we remember the past and not the future? What does it mean for time to “flow”? Do we exist in time or does time exist in us? In lyric, accessible prose, Carlo Rovelli invites us to consider questions about the nature of time that continue to puzzle physicists and philosophers alike.
For most readers this is unfamiliar terrain. We all experience time, but the more scientists learn about it, the more mysterious it remains. We think of it as uniform and universal, moving steadily from past to future, measured by clocks. Rovelli tears down these assumptions one by one, revealing a strange universe where at the most fundamental level time disappears. He explains how the theory of quantum gravity attempts to understand and give meaning to the resulting extreme landscape of this timeless world. Weaving together ideas from philosophy, science and literature, he suggests that our perception of the flow of time depends on our perspective, better understood starting from the structure of our brain and emotions than from the physical universe.
Already a bestseller in Italy, and written with the poetic vitality that made Seven Brief Lessons on Physics so appealing, The Order of Time offers a profoundly intelligent, culturally rich, novel appreciation of the mysteries of time.
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New Dc Hand Crank Power Generator Dynamo Dc Motor Mini Dc Generator Green Energy Assembled For Fun Specifications: 3v Dc Hand Crank Power Generator Voltage: 3v Dc Do Not Including The Led Light Package Including: 1pcs Motor
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working model of science Hydraulic Brake kit is based on hydraulic mechanism used for braking system. This hydro-brake system has made our life much easy and safe due to its stable and efficiency in transmission of fluid to perform mechanical work.
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This book provides a comprehensive coverage of all the diverse topics in classical mechanics and is designed to serve as a textbook for graduate students of physics and as a workbook for Engineering students. It includes the often-neglected topics of relativistic scattering, non-linear oscillatory systems, canonical perturbation theory and vibrations of continuous systems. A special feature of this book is the inclusion of more than two hundred examples and worked problems. The revised edition is thoroughly revised, in particular the chapters on special theory of relativity and relativistic mechanics.
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