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Quantum Mechanics Quotes

Browse 278 quotes about Quantum Mechanics.

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Quantum Mechanics Quotes

“Everything that seems strange about quantum mechanics comes down to measurement. If we take a look, the quantum system behaves one way. If we don’t, the system does something else. What’s more, different ways of looking can elicit apparently mutually contradictory answers. If we look at a system one way, we see this; but if we look at the same system another way, we see not merely that but not this. The object went through one slit; no, it went through both. How can that be? How can ‘the way nature behaves’ depend on how – or if – we choose to observe it?”

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Book:Beyond Weird
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“When it’s said that quantum mechanics is ‘weird’, or that nobody understands it, the image tends to invite the analogy of a peculiar person whose behaviour and motives defy obvious explanation. But this is too glib. It’s not so much understanding or even intuition that quantum mechanics defies, but our sense of logic itself. Sure, it’s hard to intuit what it means for objects to travel along two paths at once, or to have their properties partly situated some place other than the object itself, and so on. But these are just attempts to express in everyday words a state of affairs that defeats the capabilities of language. Our language is designed to reflect the logic we’re familiar with, but that logic won’t work for quantum mechanics.”

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Book:Beyond Weird
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“So long as we don’t try to figure out which slit [electrons] go through, they will behave as if they go through both at once. But if we try to pin down which slit they pass through, they only go through one. The mere act of making the measurement – even if we can be pretty sure that the measurement shouldn’t obstruct or influence the electron’s path – appears to turn a wave into a particle. Yes, appears to. Does the electron really pass through both slits at once when we’re not looking at its path? Does it change from wave to particle when we do look? These are, according to Bohr’s view of quantum mechanics, illegitimate questions, precisely because they are insisting on some microscopic description underlying the measurements we make. Bohr argued that there is nothing in quantum mechanics that permits us to formulate such a description. That is not what the Schrödinger equation is about. It just predicts the outcomes of measurements.”

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Book:Beyond Weird
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“Many scientists have tried to make determinism and complementarity the basis of conclusions that seem to me weak and dangerous; for instance, they have used Heisenberg's uncertainty principle to bolster up human free will, though his principle, which applies exclusively to the behavior of electrons and is the direct result of microphysical measurement techniques, has nothing to do with human freedom of choice. It is far safer and wiser that the physicist remain on the solid ground of theoretical physics itself and eschew the shifting sands of philosophic extrapolations.”

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Book:Nouvelles perspectives en microphysique
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“Electrons, when they were first discovered, behaved exactly like particles or bullets, very simply. Further research showed, from electron diffraction experiments for example, that they behaved like waves. As time went on there was a growing confusion about how these things really behaved ---- waves or particles, particles or waves? Everything looked like both. This growing confusion was resolved in 1925 or 1926 with the advent of the correct equations for quantum mechanics. Now we know how the electrons and light behave. But what can I call it? If I say they behave like particles I give the wrong impression; also if I say they behave like waves. They behave in their own inimitable way, which technically could be called a quantum mechanical way. They behave in a way that is like nothing that you have seen before. Your experience with things that you have seen before is incomplete. The behavior of things on a very tiny scale is simply different. An atom does not behave like a weight hanging on a spring and oscillating. Nor does it behave like a miniature representation of the solar system with little planets going around in orbits. Nor does it appear to be somewhat like a cloud or fog of some sort surrounding the nucleus. It behaves like nothing you have seen before. There is one simplication at least. Electrons behave in this respect in exactly the same way as photons; they are both screwy, but in exactly in the same way…. The difficulty really is psychological and exists in the perpetual torment that results from your saying to yourself, "But how can it be like that?" which is a reflection of uncontrolled but utterly vain desire to see it in terms of something familiar. I will not describe it in terms of an analogy with something familiar; I will simply describe it. There was a time when the newspapers said that only twelve men understood the theory of relativity. I do not believe there ever was such a time. There might have been a time when only one man did, because he was the only guy who caught on, before he wrote his paper. But after people read the paper a lot of people understood the theory of relativity in some way or other, certainly more than twelve. On the other hand, I think I can safely say that nobody understands quantum mechanics. So do not take the lecture too seriously, feeling that you really have to understand in terms of some model what I am going to describe, but just relax and enjoy it. I am going to tell you what nature behaves like. If you will simply admit that maybe she does behave like this, you will find her a delightful, entrancing thing. Do not keep saying to yourself, if you can possible avoid it, "But how can it be like that?" because you will get 'down the drain', into a blind alley from which nobody has escaped. Nobody knows how it can be like that.”

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Book:The Character of Physical Law
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“If different physics is ‘all’ you want, you can look (say) to Einstein’s theories of special and general relativity, in which motion and gravity slow time and bend space. That’s not easy to imagine, but I reckon you can do it. You just need to imagine time passing more slowly, distances contracting: distortions of your grid references. You can put those ideas into words. In quantum theory, words are blunt tools. We give names to things and processes, but those are just labels for concepts that cannot be properly, accurately expressed in any terms but their own.”

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Book:Beyond Weird
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“Despite the earnest belief of most of his fans, Einstein did not win his Nobel Prize for the theory of relativity, special or general. He won for explaining a strange effect in quantum mechanics, the photoelectric effect. His solution provided the first real evidence that quantum mechanics wasn’t a crude stopgap for justifying anomalous experiments, but actually corresponds to reality. And the fact that Einstein came up with it is ironic for two reasons. One, as he got older and crustier, Einstein came to distrust quantum mechanics. Its statistical and deeply probabilistic nature sounded too much like gambling to him, and it prompted him to object that “God does not play dice with the universe.” He was wrong, and it’s too bad that most people have never heard the rejoinder by Niels Bohr: “Einstein! Stop telling God what to do.”

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Book:The Disappearing Spoon: And Other True Tales of Madness, Love, and the History of the World from the Periodic Table of the Elements
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“To shift your life in a desired direction, you must powerfully shift your subconscious.”

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Book:Moving Through Parallel Worlds To Achieve Your Dreams
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“If Zen master Dōgen had been a physicist, I think he might have liked quantum mechanics. He would have naturally grasped the all-inclusive nature of superposition and intuited the interconnectedness of entanglement. As a contemplative who was also a man of action, he would have been intrigued by the notion that attention might have the power to alter reality, while at the same time understanding that human consciousness is neither more nor less than the clouds and water, or the hundreds of grasses. He would have appreciated the unbounded nature of not knowing.”

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Book:A Tale for the Time Being
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“Wavefunction collapse is a generator of knowledge: it is not so much a process that gives us the answers, but is the process by which answers are created. The outcome of that process can’t, in general, be predicted with certainty, but quantum mechanics gives us a method for calculating the probabilities of particular outcomes. That’s all we can ask for.”

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Book:Beyond Weird
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“Here is the answer to Einstein’s question about the moon. Yes, it is there when no one observes it – because the environment is already, and without cease, ‘measuring’ it. All of the photons of sunlight that bounce off the moon are agents of decoherence, and more than adequate to fix its position in space and give it a sharp outline. The universe is always looking.”

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Book:Beyond Weird
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“To apply quantum theory to the entire universe... is tricky... particles of matter fired at a screen with two slits in it... exhibit interference patterns just as water waves do. Feynman showed that this arises because a particle does not have a unique history. That is, as it moves from its starting point A to some endpoint B, it doesn’t take one definite path, but rather simultaneously takes every possible path connecting the two points. From this point of view, interference is no surprise because, for instance, the particle can travel through both slits at the same time and interfere with itself. In this view, the universe appeared spontaneously, starting off in every possible way.”

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Book:The Grand Design
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“Mankind has uncovered two extremely efficient theories: one that describes our universe's structure (Einstein's gravity: the theory of general relativity), and one that describes everything our universe contains (quantum field theory), and these two theories won't talk to each other.”

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Book:The Universe in Your Hand: A Journey Through Space, Time, and Beyond
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“Based upon quantum mechanics, our physical reality should not be solid. Most likely our physical reality is an elaborate illusion within our own consciousness and the collective consciousness of the Universe/God.”

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Book:The Principle of Oneness: A Practical Guide to Experiencing the Profound Unity of Everything
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“More than ninety-five percent of your brain activity, as you consciously read this sentence, is being used by your subconscious mind.”

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Book:Moving Through Parallel Worlds To Achieve Your Dreams
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“It is well understood in psychology that the subconscious mind has the dominant influence on human decision making, and therefore the pivotal role of the subconscious, for you to achieve success, is inescapable.”

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Book:Moving Through Parallel Worlds To Achieve Your Dreams
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“One hundred thirty-seven is the inverse of something called the fine-structure constant. ...The most remarkable thing about this remarkable number is that it is dimension-free. ...Werner Heisenberg once proclaimed that all the quandaries of quantum mechanics would shrivel up when 137 was finally explained.”

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Book:The God Particle: If the Universe is the Answer, what is the Question?
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“Where misunderstanding dwells, misuse will not be far behind. No theory in the history of science has been more misused and abused by cranks and charlatans—and misunderstood by people struggling in good faith with difficult ideas—than quantum mechanics.”

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Book:The Big Picture: On the Origins of Life, Meaning, and the Universe Itself
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“The mind reels when we realize that, according to this interpretation of quantum mechanics, all possible worlds coexist with us. Although wormholes might be necessary to reach such alternate worlds, these quantum realities exist in the very same room that we live in. They coexist with us wherever we go.”

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Book:Parallel Worlds: A Journey through Creation, Higher Dimensions, and the Future of the Cosmos
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“Computer simulation often works fine if we assume nothing more than Newton’s laws at the atomic scale, even though we know that really we should be using quantum, not classical, mechanics at that level. But sometimes approximating the behaviour of atoms as though they were classical billiard-ball particles isn’t sufficient. We really do need to take quantum behaviour into account to accurately model chemical reactions involved in industrial catalysis or drug action, say. We can do that by solving the Schrödinger equation for the particles, but only approximately: we need to make lots of simplifications if the maths is to be tractable. But what if we had a computer that itself works by the laws of quantum mechanics? Then the sort of behaviour you’re trying to simulate is built into the very way the machine operates: it is hardwired into the fabric. This was the point Feynman made in his article. But no such machines existed. At any rate they would, as he pointed out with wry understatement, be ‘machines of a different kind’ from any computer built so far. Feynman didn’t work out the full theory of what such a machine would look like or how it would work – but he insisted that ‘if you want to make a simulation of nature, you’d better make it quantum-mechanical’.”

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Book:Beyond Weird
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“Quantum fluctuations are, at their root, completely a-causal, in the sense that cause and effect and ordering of events in time is not a part of how these fluctuations work. Because of this, there seem not to be any correlations built into these kinds of fluctuations because 'law' as we understand the term requires some kind of cause-and-effect structure to pre-exist. Quantum fluctuations can precede physical law, but it seems that the converse is not true. So in the big bang, the establishment of 'law' came after the event itself, but of course even the concept of time and causality may not have been quite the same back then as they are now.”

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Author:Sten F. Odenwald
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“If we look upon the earth as a place where our 'higher selves' have come to learn, to experience, or even to be judged, then the splitting of realities that occurs with the many-worlds interpretation is merely an extension of these functions.”

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Book:Moving Through Parallel Worlds To Achieve Your Dreams
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“How can quantum mechanics and general relativity be reconciled? By re-casting both in terms of holography. The final scientific theory of everything will be mathematical holography, with mental nonlocality at its core. If the whole science community adopts a holographic paradigm rather than a materialist paradigm, a final theory will be available within ten years.”

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Book:Richard Dawkins: The Pope of Unreason
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“Artificial intelligence is not a foreign entity; it is humanity’s reflection, magnified and made manifest. What we build in machines, we must first recognize in ourselves." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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“Every great tool has two edges: one to build and one to destroy. AI will show us which edge we are willing to hold." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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“The question isn’t whether AI will shape the future—it’s whether we have the courage to shape it responsibly." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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“In the age of artificial intelligence, the most pressing question is not what machines will become, but what humanity will remain." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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“To navigate the advent of artificial intelligence, we don’t need to become experts in machines—we need to become better stewards of humanity." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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“Innovation without ethics is like navigation without a compass. AI demands both vision and caution in equal measure." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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“Artificial intelligence doesn’t replace human creativity—it challenges us to elevate it, to prove that our imagination cannot be so easily coded." - Jop Helm”

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Book:IN THE ADVENT OF ARTIFICIAL INTELLIGENCE: A Human Primer for the AI Age
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