reversal

Definitions

  • "The driver heard them, and reversed his engine."
    "The driver heard them, and reversed his engine."
  • WordNet 3.6
    • n reversal a major change in attitude or principle or point of view "an about-face on foreign policy"
    • n reversal a change from one state to the opposite state "there was a reversal of autonomic function"
    • n reversal the act of reversing the order or place of
    • n reversal turning in the opposite direction
    • n reversal a judgment by a higher court that the judgment of a lower court was incorrect and should be set aside
    • n reversal a decision to reverse an earlier decision
    • n reversal turning in an opposite direction or position "the reversal of the image in the lens"
    • n reversal an unfortunate happening that hinders or impedes; something that is thwarting or frustrating
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Additional illustrations & photos:

Repeated pattern, alternately reversed, forming a linear design Repeated pattern, alternately reversed, forming a linear design
Design for the Reverse of the Jubilee Medallion Design for the Reverse of the Jubilee Medallion

Webster's Revised Unabridged Dictionary
  • Interesting fact: Compact discs read from the inside to the outside edge, the reverse of how a record works.
    • Reversal A change or overthrowing; as, the reversal of a judgment, which amounts to an official declaration that it is false; the reversal of an attainder, or of an outlawry, by which the sentence is rendered void.
    • a Reversal Intended to reverse; implying reversal.
    • Reversal The act of reversing; the causing to move or face in an opposite direction, or to stand or lie in an inverted position; as, the reversal of a rotating wheel; the reversal of objects by a convex lens.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Reversing Falls is in Canada, where the St. John River flows into the Bay of Fundy at St. John, New Brunswick. The rapids at this juncture flows normally at low tide, backwards at high tide. Between tides there is a 15-minute period in which the river is placid and boaters sail by very quickly.
    • n reversal The act of reversing, or of altering a position, direction, action, condition, or state to its opposite or contrary; also, the state of being reversed.
    • n reversal In physics, specifically, the changing of a bright line in a spectrum, produced by an incandescent vapor, into a dark line (by absorption), and the reverse. The reversal of lines in the solar spectrum has been observed at the time of a total eclipse, when certain of the dark absorption-lines have suddenly become bright lines as the light from the body of the sun has been cut off. See spectrum.
    • n reversal The act of repealing, revoking, or annulling; a change or overthrowing: as, the reversal of a judgment, which amounts to an official declaration that it is erroneous and rendered void or terminated; the reversal of an attainder or of an outlawry.
    • n reversal In biology, reversion.
    • reversal Causing, intending, or implying reverse action; reversing.
    • n reversal In international law: A promise by a sovereign power that a certain order, or certain conditions, promulgated or established, will be observed, notwithstanding changes that may occur to cause deviation therefrom. For instance, when France recognized Russia as an imperial government, a reversal was required that Russia would not cause any derogation from the rank which France had held toward her.
    • n reversal A declaration by a sovereign that by a given act he means no prejudice to another power.
    • n reversal In electricity, the process of changing the direction of the current in a circuit. In telegraphy the term is applied to the sending of signals over the line by means of rapidly reversed or alternating currents.
    • ***
Chambers's Twentieth Century Dictionary
    • n Reversal act of reversing
    • ***

Quotations

  • Charles Caleb Colton
    Charles%20Caleb%20Colton
    “Constant success shows us but one side of the world; adversity brings out the reverse of the picture.”
  • Horace
    Horace
    “The one who prosperity takes too much delight in will be the most shocked by reverses.”
  • Susan Sontag
    Susan%20Sontag
    “Boredom is just the reverse side of fascination: both depend on being outside rather than inside a situation, and one leads to the other.”
  • (Decimus Junius Juvenalis) Juvenal
    (Decimus Junius Juvenalis) Juvenal
    “Few people can distinguish the genuinely good from the reverse.”
  • Source Unknown
    Source Unknown
    “Our hopes are but memories reversed.”
  • T. S. Eliot
    T.%20S.%20Eliot
    “In a minute there is time for decisions and revisions which a minute will reverse.”

Etymology

Webster's Revised Unabridged Dictionary
From Reverse
Chambers's Twentieth Century Dictionary
L. reversus, pa.p. of revertĕre, to turn back—re-, back, vertĕre, to turn.

Usage

In literature:

It seems to me the very reverse of the truth.
"What I Saw in America" by G. K. Chesterton
In Britain the reverse is the case, labour being cheap and land being dear.
"Manures and the principles of manuring" by Charles Morton Aikman
That victory was reversed, and the success of the Commons was complete.
"Lectures on the French Revolution" by John Emerich Edward Dalberg-Acton
F. Direct and reverse sympathy.
"Zoonomia, Vol. II" by Erasmus Darwin
If there is but little of a Mississippi steamboat under the water, the reverse is true of what may be seen above its surface.
"The Quadroon" by Mayne Reid
Quite the reverse, I assure you.
"The Free Lances" by Mayne Reid
Your slavery seems to have been a system of wholesale slaughter: ours the reverse.
"Cotton is King and The Pro-Slavery Arguments" by Various
With stellar groups the reverse is the case.
"A Popular History of Astronomy During the Nineteenth Century" by Agnes M. (Agnes Mary) Clerke
In the United Kingdom, the reverse condition prevails.
"All About Coffee" by William H. Ukers
As soon as they are brought together, no matter in what way, the reversion is bound to occur.
"Mendelism" by Reginald Crundall Punnett
SOME CASES TO REVERSION.
"The Variation of Animals and Plants Under Domestication, Volume II (of 2)" by Charles Darwin
On the present occasion England did the reverse.
"Diary from March 4, 1861, to November 12, 1862" by Adam Gurowski
At once a hugely joyful reversion of feeling.
"The Story of the Great War, Volume II (of VIII)" by Various
In the next row, you reverse the work, knitting the stitches that were before slipped, and slipping the knitted ones.
"The Ladies' Work-Table Book" by Anonymous
The result of evolution along this line would be the exact reverse of the preceding.
"The Meaning of Evolution" by Samuel Christian Schmucker
So far from this being true, it is quite the reverse of the truth.
"Personal Recollections of a Cavalryman" by J. H. (James Harvey) Kidd
There are men who at the first reverse of fortune throw down their cards and confess themselves beaten.
"The Bramleighs Of Bishop's Folly" by Charles James Lever
Not long after, he experienced another humiliating reverse from France, then ruled by a younger rival, Henry the Second, the son of Francis.
"History of the Reign of Philip the Second, King of Spain." by William H. Prescott
All now was reversed.
"The Student's Life of Washington; Condensed from the Larger Work of Washington Irving" by Washington Irving
What is up is not down and what is down is not reversing and what is refused is not a section and what is silenced is not speaking.
"Geography and Plays" by Gertrude Stein
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In poetry:

It is life in slow motion,
it's the heart in reverse,
it's a hope-and-a-half:
too much and too little at once.
"The Wait" by Rainer Maria Rilke
"When it was over, for a whim,
He ran to tell the King;
And being the reverse of slim,
A two-mile trot was not for him
A very easy thing.
"Phantasmagoria Canto V (" by Lewis Carroll
To see our Father's hand once more
Reverse for us the plenteous horn
Of autumn, filled and running o'er
With fruit, and flower, and golden corn!
"For An Autumn festival" by John Greenleaf Whittier
Arrived this evening at half-past nine.
Everybody is doing fine.
Is it a boy, or quite the reverse?
You can call in the morning and ask the nurse.
"First Child ... Second Child" by Ogden Nash
Shine on, "Lone Star!" in grief and tears,
And sad reverses oft baptized;
Shine on amid thy sister spheres;
Lone stars in heaven are not despised.
"Shine On" by Samuel Francis Smith
Lord, thou hast called thy grace to mind,
Thou hast reversed our heavy doom;
So God forgave when Isr'el sinned,
And brought his wand'ring captives home.
"Psalm 85 part 1" by Isaac Watts

In news:

The Christ Child Society of Akron Night Club Reverse Raffle/Silent Auction will be held at 6 pm March 5 at St George Fellowship Centre, 3204 Ridgewood Road, Akron.
Whether you have skin spots from sun exposure, or you picked a zit that left you with a dark spot, there's a chance you can reverse your skin damage without a trip to the dermatologist.
Will today's kids be the first generation to reverse US longevity gains.
This trend is not going to reverse itself.
A Florida appellate court has reversed another de facto life sentence for a juvenile.
Jon Stewart pulls a deft reversal with cutting Weiner satire.
Aquatech will provide a third stage reverse osmosis unit for the plant.
'She's our friend': GOP reverses course, doesn't demote Lisa Murkowski.
Federal Task Force Releases Final Strategy for Reversing Deterioration of Gulf Ecosystem.
An exhibition now at the Newark Museum is a reversal of expectations.
Norm Coleman, contra Romney, says Roe v Wade "not going to be reversed".
The announcement reverses City Council's decision in June to stop mailing out the pink notices.
On Sept 12, a Los Angeles judge reversed a jury's $78 million fraud verdict against a pay-phone business Bill Simon ran in partnership with a convicted Florida drug kingpin.
9th Circuit Court of Appeals, by a 6-5 vote, reverses an earlier immigration ruling.
EPA Reverses Controversial 'Human Guinea Pig ' Rule.
***

In science:

Now a whole cluster is reversed due to the forced reversal of a “seed” cluster, when the sample is optimized again.
Susceptibility and Percolation in 2D Random Field Ising Magnets
One can associate an electric network to a reversible random walk (X, P ) with reversibility measure m in the following way.
Classification on the average of random walks
To be specific, for δE (t) we have reversibility provided t < τcl , while for P (t) we have reversibility for t < ¯h/Γ.
Quantum Irreversibility of Energy Spreading
Both properties can combine in the four possible alternatives: a.- Time-reversal invariance and reversibility.
The cosmological origin of time-asymmetry
Pseudo-random operators from the universal classes with time-reversal symmetry may help a quantum computer simulate systems with time-reversal symmetries.
Pseudo-random operators of the circular ensembles
Indeed it is easily reversible with reversibility measure given by m(x) := #{y : (x, y ) ∈ E }, which is clearly infinite.
A note on compact Markov operators
Let (X, P ) be a reversible random walk, m a reversibility measure and x ∈ Γ a fixed vertex.
A note on compact Markov operators
Charge and charge density are invariant while current densities get reversed under a unitary time reversal (see section VI).
Negative energies and time reversal in Quantum Field Theory
For a massive particle this may be interpreted as mass reversal coming along with velocity reversal.
Negative energies and time reversal in Quantum Field Theory
For instance, it is often stated that a unitary time reversal operator is not allowed because it would produce the not acceptable charge reversal.
Negative energies and time reversal in Quantum Field Theory
The sign of change can be reversed by reversing the signs of bb and bd .
Dynamical Relaxation of the Dark Matter to Baryon Ratio
It is not necessary to prove a theorem for the time-reversal because, for instance, bounds on ψ+ apply to ←−ψ + as well by bounding ψ+ of the time-reversed Markov chain.
Vertex and edge expansion properties for rapid mixing
Consequently at some of the neighboring sites particle numbers may also go below the nh c which again reverse topple and thus an avalanche of reverse topplings take place in the system.
Particle-hole symmetry in a sandpile model
For this reason, we call the first variant RA for “reversal allowed”, and the second variant RF for “reversal forbidden”.
On a Type of Self-Avoiding Random Walk with Multiple Site Weightings and Restrictions
Lemma 2.7 If an automaton is bi-reversible then its inverse, reverse, and dual automata are also bi-reversible.
On a series of finite automata defining free transformation groups
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