The Ambidextrous Universe: Mirror Asymmetry and Time-Reversed Worlds
Encyclopedia
The Ambidextrous Universe is a popular science
Popular science
Popular science, sometimes called literature of science, is interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is broad-ranging, often written by scientists as well as journalists, and is presented in many...

 book by Martin Gardner
Martin Gardner
Martin Gardner was an American mathematics and science writer specializing in recreational mathematics, but with interests encompassing micromagic, stage magic, literature , philosophy, scientific skepticism, and religion...

 covering aspects of symmetry
Symmetry
Symmetry generally conveys two primary meanings. The first is an imprecise sense of harmonious or aesthetically pleasing proportionality and balance; such that it reflects beauty or perfection...

 and asymmetry
Asymmetry
Asymmetry is the absence of, or a violation of, symmetry.-In organisms:Due to how cells divide in organisms, asymmetry in organisms is fairly usual in at least one dimension, with biological symmetry also being common in at least one dimension....

 in human culture, science and the wider universe
Universe
The Universe is commonly defined as the totality of everything that exists, including all matter and energy, the planets, stars, galaxies, and the contents of intergalactic space. Definitions and usage vary and similar terms include the cosmos, the world and nature...

.

Originally published in 1964, it underwent revisions in 1969, 1979, 1990 and 2005 (the last two are known as the "Third, revised edition"). Originally titled The Ambidextrous Universe: Mirror Asymmetry and Time-Reversed Worlds, subsequent editions are known as The New Ambidextrous Universe: Symmetry and Asymmetry from Mirror Reflections to Superstrings.

Content

The book begins with the subject of mirror
Mirror
A mirror is an object that reflects light or sound in a way that preserves much of its original quality prior to its contact with the mirror. Some mirrors also filter out some wavelengths, while preserving other wavelengths in the reflection...

s, and from there passes through symmetry in poetry
Poetry
Poetry is a form of literary art in which language is used for its aesthetic and evocative qualities in addition to, or in lieu of, its apparent meaning...

, shape
Shape
The shape of an object located in some space is a geometrical description of the part of that space occupied by the object, as determined by its external boundary – abstracting from location and orientation in space, size, and other properties such as colour, content, and material...

s, art
Art
Art is the product or process of deliberately arranging items in a way that influences and affects one or more of the senses, emotions, and intellect....

, music
Music
Music is an art form whose medium is sound and silence. Its common elements are pitch , rhythm , dynamics, and the sonic qualities of timbre and texture...

, galaxies
Galaxy
A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter. The word galaxy is derived from the Greek galaxias , literally "milky", a...

, sun
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

s, planet
Planet
A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...

s and wildlife
Wildlife
Wildlife includes all non-domesticated plants, animals and other organisms. Domesticating wild plant and animal species for human benefit has occurred many times all over the planet, and has a major impact on the environment, both positive and negative....

. It then moves into molecular scale
Molecule
A molecule is an electrically neutral group of at least two atoms held together by covalent chemical bonds. Molecules are distinguished from ions by their electrical charge...

 physics and how symmetry and asymmetry have evolved from the beginning of life on Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...

. There is a chapter on carbon
Carbon
Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds...

 and its versatility, and the last eight chapters concern a problem called the Ozma Problem.

The Ozma Problem

The 18th chapter, "The Ozma Problem", poses a problem that Gardner claims would arise if Earth should ever enter into communication with life on another planet through Project Ozma
Project Ozma
Project Ozma was a pioneering SETI experiment started in 1960 by Cornell University astronomer Frank Drake, at the National Radio Astronomy Observatory at Green Bank, West Virginia. The object of the experiment was to search for signs of life in distant solar systems through interstellar radio waves...

. This is the problem of how to communicate the meaning of left and right, where the two communicants are conditionally not allowed to view any one object in common. The problem was first implied in Immanuel Kant's
Immanuel Kant
Immanuel Kant was a German philosopher from Königsberg , researching, lecturing and writing on philosophy and anthropology at the end of the 18th Century Enlightenment....

 discussion of left and right, and William James
William James
William James was a pioneering American psychologist and philosopher who was trained as a physician. He wrote influential books on the young science of psychology, educational psychology, psychology of religious experience and mysticism, and on the philosophy of pragmatism...

 mentioned it in his chapter on "The Perception of Space" in Principles of Psychology
Principles of Psychology
The Principles of Psychology is a monumental text in the history of psychology, written by William James and published in 1890.There were four methods in James' psychology: analysis , introspection , experiment The Principles of Psychology is a monumental text in the history of psychology, written...

(1890). It is also mentioned by Charles Howard Hinton
Charles Howard Hinton
Charles Howard Hinton was a British mathematician and writer of science fiction works titled Scientific Romances. He was interested in higher dimensions, particularly the fourth dimension, and is known for coining the word tesseract and for his work on methods of visualising the geometry of...

.

The solution to the Ozma Problem is embodied in an experiment conducted by Chien-Shiung Wu
Chien-Shiung Wu
Chien-Shiung Wu was a Chinese-American physicist with expertise in the techniques of experimental physics and radioactivity. Wu worked on the Manhattan Project...

 involving the beta decay
Beta decay
In nuclear physics, beta decay is a type of radioactive decay in which a beta particle is emitted from an atom. There are two types of beta decay: beta minus and beta plus. In the case of beta decay that produces an electron emission, it is referred to as beta minus , while in the case of a...

 of cobalt-60
Cobalt-60
Cobalt-60, , is a synthetic radioactive isotope of cobalt. Due to its half-life of 5.27 years, is not found in nature. It is produced artificially by neutron activation of . decays by beta decay to the stable isotope nickel-60...

. This experiment was the first to disprove the conservation of parity
Parity (physics)
In physics, a parity transformation is the flip in the sign of one spatial coordinate. In three dimensions, it is also commonly described by the simultaneous flip in the sign of all three spatial coordinates:...

. However, Gardner added in the last chapter of his book that the Ozma Problem is only solved within our galaxy: due to the nature of antimatter
Antimatter
In particle physics, antimatter is the extension of the concept of the antiparticle to matter, where antimatter is composed of antiparticles in the same way that normal matter is composed of particles...

, an antigalaxy would get the opposite result from the experiment conducted by Wu.

Nabokov reference

In the original 1964 edition of The Ambidextrous Universe, Gardner quoted two lines of poetry from Vladimir Nabokov
Vladimir Nabokov
Vladimir Vladimirovich Nabokov was a multilingual Russian novelist and short story writer. Nabokov wrote his first nine novels in Russian, then rose to international prominence as a master English prose stylist...

's 1962 novel Pale Fire
Pale Fire
Pale Fire is a novel by Vladimir Nabokov. The novel is presented as a 999-line poem titled "Pale Fire", written by the fictional John Shade, with a foreword and lengthy commentary by a neighbor and academic colleague of the poet. Together these elements form a narrative in which both authors are...

which are supposed to have been written by a poet, "John Shade
John Shade
John Shade is a fictional character in Vladimir Nabokov's 1962 novel Pale Fire.-Shade and family:The structure is notoriously difficult to unravel, but most readers agree that Shade is a poet married to his teenage sweetheart, Sybil. Their only child, a daughter named Hazel, apparently committed...

", who is actually fictional. As a joke, Gardner credited the lines only to Shade and put Shade's name in the index as if he were a real person. In his 1969 novel Ada or Ardor: A Family Chronicle
Ada or Ardor: A Family Chronicle
Ada or Ardor: A Family Chronicle is a novel by Vladimir Nabokov published in 1969.Ada began to materialize in 1959, when Nabokov was flirting with two projects: "The Texture of Time" and "Letters from Terra." In 1965, he began to see a link between the two ideas, finally composing a unified novel...

, Nabokov returned the favor by having the character Van Veen "quote" the Gardner book along with the two lines of verse:
"Space is a swarming in the eyes, and Time a singing in the ears," says John Shade, a modern poet, as quoted by an invented philosopher ("Martin Gardiner" [sic]) in The Ambidextrous Universe, page 165 [sic].

Nabokov misspells Gardner's name and gives the wrong page number (it's actually 168), both of which may have been intentional.
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