Get The Quantum Universe: Everything That Can Happen Does Happen PDF


By Brian Cox

ISBN-10: 0306820609

ISBN-13: 9780306820601

Within the Quantum Universe, Brian Cox and Jeff Forshaw method the area of quantum mechanics within the similar method they did in Why Does E=mc2? and make primary medical rules accessible—and fascinating—to everyone.
The subatomic realm has a name for weirdness, spawning any variety of profound misunderstandings, trips into jap mysticism, and woolly pronouncements at the interconnectedness of all issues. Cox and Forshaw’s rivalry? there's no want for quantum mechanics to be considered this fashion. there's a lot of mileage within the “weirdness” of the quantum international, and it frequently results in confusion and, frankly, undesirable technological know-how. The Quantum Universe cuts during the Wu Li and asks what observations of the wildlife made it helpful, the way it used to be developed, and why we're convinced that, for all its obvious strangeness, it's a strong theory.

The quantum mechanics of The Quantum Universe offer a concrete version of nature that's related in its essence to Newton’s legislation of movement, Maxwell’s idea of electrical energy and magnetism, and Einstein’s idea of relativity.

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Additional resources for The Quantum Universe: Everything That Can Happen Does Happen

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4. At every point along the new wave, we can compute the wave height by adding the clocks together using the recipe we just outlined and asking how much of the new clock hand points in the 12 o’clock direction. When the clock points to 12 o’clock this is obvious – the height of the wave is simply the length of the clock hand. Similarly at 6 o’clock, it’s obvious because the wave has a trough with a depth equal to the length of the hand. 37 The Quantum Universe It’s also pretty obvious when the clock reads 3 o’clock (or 9 o’clock) because then the wave height is zero, since the clock hand is at right angles to the 12 o’clock direction.

46 Everything That Can Happen Does Happen must spread out as time passes. What we need to establish is exactly how it spreads. Unlike a water wave, we are proposing that the electron wave spreads out to fill the Universe in an instant. Technically speaking, we’d say that the rule for particle propagation is different from the rule for water wave propagation, although both propagate according to a ‘wave equation’. The equation for water waves is different from the equation for particle waves (which is the famous Schrödinger equation we mentioned in the last chapter), but both encode wavy physics.

The fact that it is not something we can touch, smell or see directly is irrelevant. Indeed, we would not get very far in physics if we decided to restrict our description of the Universe to things we can directly sense. In our discussion of the double-slit experiment for electrons, we said that the electron wave is largest where the electron is most likely to be. This interpretation allowed us to appreciate how the stripy interference pattern can be built up dot by dot as the electrons arrive.

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The Quantum Universe: Everything That Can Happen Does Happen by Brian Cox

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