F

Definitions

  • A man carries something on a shoulder and forms a letter F
    A man carries something on a shoulder and forms a letter F
  • WordNet 3.6
    • n F the 6th letter of the Roman alphabet
    • n f the 6th letter of the Roman alphabet
    • n F the capacitance of a capacitor that has an equal and opposite charge of 1 coulomb on each plate and a voltage difference of 1 volt between the plates
    • n F a degree on the Fahrenheit scale of temperature
    • n F a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
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Additional illustrations & photos:

Letter F Letter F

Webster's Revised Unabridged Dictionary
  • Interesting fact: On September 7, 1997, the first flight of the F-22a occurred.
    • F F is the sixth letter of the English alphabet, and a nonvocal consonant. Its form and sound are from the Latin. The Latin borrowed the form from the Greek digamma, which probably had the value of English w consonant. The form and value of Greek letter came from the Phœnician, the ultimate source being probably Egyptian. Etymologically f is most closely related to pkv, and b; as in E. five, Gr. pe`nte; E. wolf, L. lupus, Gr. ly`kos; E. fox, vixen ; fragile, break; fruit, brook, v. t.; E. bear, L. ferre. See Guide to Pronunciation, §§ 178, 179, 188, 198, 230.
    • F (Mus) The name of the fourth tone of the model scale, or scale of C. F sharp (F ♯) is a tone intermediate between F and G.
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Century Dictionary and Cyclopedia
  • Interesting fact: Most American car horns honk in the key of F
    • f The sixth letter and fourth consonant in the English alphabet, as in the Latin and the Phenician, and also as in the early Greek alphabet, through which the Latin was derived from the Phenician (see A), although it has gone out of use in the alphabet generally known to us as Greek. The Phenician character had the name vav or waw (meaning ‘peg’ or ‘hook’), and its value was that of our English w. This same value it had in primitive Greek use, and it is found so used in western inscriptions, although lost too early to appear in eastern inscriptions. The sound, namely w, went gradually out of use in Greek, and its sign went with it. Since the latter somewhat resembled in form one gamma (Γ) written above another, the Greek grammarians gave it the fanciful name of digamma or double gamma, by which therefore we generally call it as a Greek letter. The comparative scheme of forms (compare A) is as follows:
    • f In the adaptation of the alphabet to Latin use the sign first received the value we give it, since the f-sound occurred in Latin and needed a representative; the w-sound was provided for by being written with the same character as u. (See U and V.) The sound f, as we pronounce it, is a surd (or breathed, or voiceless) labiodental, a fricative sound or spirant: that is to say, it is made by the audible friction or rustling of the unintonated breath, when forced out between the edge of the lower lip and the tips of the upper teeth, these being held in contact with one another. If, everything else remaining the same, the intonated breath be forced out instead, the sound is v (as in valve, vivid); hence, f and v are corresponding surd and sonant. An f, nearly identical with ours in audible character, may also be made between the edges of the two lips alone, without any help from the teeth; and such a purely labial f is heard in many languages, and is with probability to be regarded as more primitive than the labiodental f, and as forming the transition to it, in the languages where the latter prevails. The same sound is also widely represented in English by ph, but almost only in words coming from the Greek; it also exists in some words written with gh, as laugh, cough, clough, rough, tough, etc., the labial aspirant having taken in such words the place of the palatal, such change being recognized in the spelling in only a few words, as dwarf, draft (= draught), duff (= dough, as formerly pronounced), etc. Historically, f stands in general for a more original p, as found in Sanskrit and the classical languages: thus, father for pitar, πατήρ, pater, etc.
    • f As a medieval Roman numeral, 40, and with a dash over it, F, 40,000.
    • f In music: The key-note of the major key of one flat having the signature shown in fig. 3, or of the minor key of four flats having the signature shown in fig. 4; also, the final of the Lydian mode in medieval music.
    • f In the fixed system of solmization, the fourth tone of the scale of C, called fa, and hence so named by French musicians.
    • f On the keyboard of the pianoforte, the white key next to the left of each group of three black keys.
    • f The tone given by such a key, or a tone in unison with such a tone.
    • f The degree of a staff assigned to such a key or tone; with the treble clef, the lower space or upper line .
    • f A note on such a degree, indicating such a key or tone .
    • f [cap. or lowercase] [Abbr. of function.] In algebra, the sign of an operation in general, and especially of a function having a differential coefficient.
    • f An abbreviation— of Fellow (see F. R. S., F. S. A., etc.);
    • f in physics, of Fahrenheit (which see);
    • f in fisheries, of full fish—a commercial mark;
    • f in a ship's log-book, of fog.
    • f The chemical symbol of fluorin.
    • n f An abbreviation of Free Church (of Scotland): as, the F. C. Presbytery.
    • n f An abbreviation of Fidei Defensor, Defender of the Faith. See Defender of the Faith, under defender.
    • n f An abbreviation of field-marshal.
    • n f An abbreviation of field-officer.
    • n f An abbreviation of Fenian Brother-hood;
    • n f of Free Baptist.
    • n f An abbreviation in freemasonry, of Fellow-craft;
    • n f [lowercase] of the Latin fidei commissum, bequeathed in trust.
    • n f An abbreviation of Foreign Mission.
    • n f An abbreviation of Foreign Office.
    • f An abbreviation of fire-plug.
    • n f An abbreviation of foot-second.
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Chambers's Twentieth Century Dictionary
  • Interesting fact: Houseflies hum in the key of F.
    • F the sixth letter in the English and Latin alphabets—its sound called a labio-dental fricative, and formed by bringing the lower lip into contact with the upper teeth: (mus.) the fourth note of the natural diatonic scale of C: as a medieval Roman numeral=40.
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Quotations

  • Source Unknown
    Source Unknown
    “Use non-verbal communication to SOFTEN the hard-line position of others: S = Smile O = Open Posture F = Forward Lean T = Touch E = Eye Contact N = Nod.”
  • Helena Christensen
    Helena Christensen
    “I was the first f****** hippy to enter this business, you know... I was one of the first girls to say I don't give a f*** about this whole supermodel thing.”
  • Helena Bonham Carter
    Helena Bonham Carter
    “I drink a lot of Diet Coke and belch. I've been known to use the f word.”

Usage

In literature:

They took a good look at the gold F.B.I.
"Dave Dawson at Casablanca" by Robert Sydney Bowen
F. from one to three hours.
"Outlines of dairy bacteriology" by H. L. Russell
Elected F. G. S., 1854, and F. R. S., 1862; knighted, 1884.
"The Makers of Canada: Index and Dictionary of Canadian History" by Various
If he'd axed for it hisse'f he cou'dn't a done better.
"Old Hendrik's Tales" by Arthur Owen Vaughan
In O. F. dissolves slowly, forming a colorless glass which remains so on cooling.
"The Elements of Blowpipe Analysis" by Frederick Hutton Getman
Walcott, G.F. Matthew, E. Emmons, E. Billings, J. Barrande, F. Schmidt, W.C. Brogger, S.A. Tullberg, S.L.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1" by Various
CAPTAIN B. F. MILLER.
"The Bright Side of Prison Life" by Samuel A. Swiggett
Here F.J. Bliss and R.A.S.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 2" by Various
Aguesseau, H.F. d' (1668-1751), orator, 457, 480.
"A Short History of French Literature" by George Saintsbury
And bycause that the lyne D.H. and the lyne F.H.
"The Path-Way to Knowledg" by Robert Record
The next great step in the treatment of the subject was made by C.F.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
By F. S. B. CHAUMONT, M.D., F.R.S.
"Coal" by Raphael Meldola
F. and in this way prevent a toughening of the albumen of which eggs are chiefly composed.
"Dietetics for Nurses" by Fairfax T. Proudfit
R. L.* RICHARD LYDEKKER, F.R.S., F.G.S., F.Z.S.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Appendix" by Various
F. in the shade, and 90 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1" by Various
Stephen F. McCormick Pvt.
"History of Ambulance Company Number 139" by Various
By CHARLES HENRY COOPER, F.S.A., and THOMPSON COOPER, F.S.A.
"Dante. An essay." by R. W. Church
By HENRY HALL, F.R.G.S., F.R.C.I.
"Scamping Tricks and Odd Knowledge" by John Newman
C.E., F.G.S., F.M.S., Past-President of the Society of Engineers.
"Wrinkles in Electric Lighting" by Vincent Stephen
Lewis J. Allen, Benjamin Billings and W. F. Dawson were of Co. F; Dawson died on the 1st of June from the effects of his wound.
"Vermont riflemen in the war for the union, 1861 to 1865" by William Y. W. Ripley
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In poetry:

And Mr. E—— is going to—
I promis'd not to tell—
Be married to Miss F——, down street;
'Tis thought that she'll do well.
"Gossip!" by Benjamin Cutler Clark
And when, in future years, you read
What I to you just now have sung,
Let others praise or blame, do thou
Think pleasantly of T. F. Young.
"To Miss - -" by Thomas Frederick Young
May both retain those feelings long,
Which prompt the words of friendly tongue,
May I not fail to think of thee,
Nor you to think of T. F. Young.
"To A Friend" by Thomas Frederick Young
F. Asleep at last, and time he was, indeed.
Turn back the cradle-quilt, and lay him in;
And, mother, will you please to draw your chair? —
The supper's ready.
"Supper at the Mill" by Jean Ingelow
An' dere on door of de house she’s stan'nin'
To welcome us back, Madame Baribeau,
An' Pierre hese'f, he was on de lan'nin',
Ready for ketchin' de rope we t'row.
"Snubbing (Tying-up) The Raft" by William Henry Drummond
I seized her in a t-t-tight embrace,
And s-s-showered k-k-kisses on her f-f-face,
And t-t-told her that I'd g-g-give my l-life
If she would only b-b-be my w-w-wife.
"April Fool" by Edwin Carty Ranck

In news:

Bake at 425 degrees F to 450 degrees F until done (approximately 35 minutes), turning the potato halfway through baking .
G Goran Dragic (pictured), F Luis Scola, F Michael Beasley.
36° F Low: 30° F. 37° F Low: 23° F. 45° F Low: 27° F.
23° F Low: 10° F. 25° F Low: 20° F. 37° F Low: 26° F.
56° F Low: 43° F. 63° F Low: 47° F. 59° F Low: 38° F.
53º F Low: 32º F. KMVT Breaking News Alerts.
21° F Low: 17° F. 32° F Low: 24° F. 37° F Low: 29° F.
PANAMA CITY, Panama—W Hotels Worldwide announced it has signed an agreement with Evolution Tower Corp, a joint venture between F & F Properties and EFC Group Inc, to debut the W Hotels brand in Central America .
57º F Low: 43º F Wind: 0 MPH.
46º F Low: 27º F Wind: 13 MPH.
41º F Low: 31º F Wind: 11 MPH.
41º F Low: 31º F Wind: 12 MPH.
65 F, Low: 53 F. 62 F, Low: 51 F.
Continental Tire says it will recall 390,000 truck tires, most of which are used as original tires on 2008-2009 Ford F-250 and F-350 trucks.
38º F Low: 32º F Wind: 0 MPH.
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In science:

For any subsheaf F ⊂ E with E /F torsion free, let H ⊂ V be the inverse image of H 0 (F (N )) and h = dim(H ), we have χ(F (N ))P (m) − P (N )χ(F (m)) ≤ hP (m) − P (N )h0 (F (m)) for m > N (note that h1 (F (N )) ≥ h1 (F (m))).
Factorization of generalized theta functions at reducible case
The stable isomorphism classes of F (V )P On /F = Zt (F , n, r)/F or (when n even) F (V )P Spn /F = Zs (F , n, r)/F are retract rational if and only if A2,n has the lifting property.
Generic algebras with involution of degree 8m
D(Lλ) and Lλ (f ) = M (respectively Lλ (f ) = N ); (ii) inf Lλ (f ) = M (respectively supLλ (f ) = N ); (iii) ∀ε > 0, Lλ ({x : f (x) > M − ε}) = 1 (respectively Lλ ({x : f (x) < N + ε}) = 1); (iv) ∀ε > 0, Lλ ({x : f (x) ≤ M − ε}) = 0 (respectively Lλ ({x : f (x) ≥ N + ε}) = 0).
Classification on the average of random walks
K (f , f ), K (f , f ) = Xk+ℓ 6=0 h ˆK1(k , ℓ) ˆf (k) ˆf (ℓ) + ˆK2(k , ℓ) ˆf (k) ˆf (−ℓ) + ˆK2(ℓ, k) ˆf (−k) ˆf (ℓ) + ˆK3 (k , ℓ) ˆf (−k) ˆf (−ℓ)i ei(k+ℓ)x , where ˆKj (k , ℓ), (j = 1, 2, 3) are the unknown coefficients to be determined, and ˆKj (k , ℓ) = ˆKj (ℓ, k), (j = 1, 3).
Melnikov Analysis for Singularly Perturbed DSII Equation
If (f × Id)∗ is invertible we set f ♯ = (f × Id)−1 ∗ (Id × f )∗ : KG (Z1 ) → KG (Z2 ), if (Id × f )∗ is invertible we set ♯f = (Id × f )∗−1 (f × Id)∗ : KG (Z2 ) → KG (Z1 ).
Induced and simple modules of double affine Hecke algebras
If (Id × f )∗ is invertible we set ♯f = (Id × f )−1 ∗ (f × Id)∗ : KG (Z1 ) → KG (Z2 ), if (f × Id)∗ is invertible we set f♯ = (f × Id)∗−1 (Id × f )∗ : KG (Z2 ) → KG (Z1 ).
Induced and simple modules of double affine Hecke algebras
Since −(f ∗Pf − F ) is nef over X and f∗(f ∗Pf − F ) ≥ 0, we have f ∗Pf − F ≥ 0. (We used that f∗F is b-nef and f∗F ≤ D , so f∗F ≤ Pf ). (iii) ′ ⇒ (iii).
On Zariski decomposition problem
Let E , F be directed graphs. A graph morphism φ : F → E consists of maps φi : F i → E i for i = 0, 1 such that φ0(r(f )) = r(φ1(f )) and φ0 (s(f )) = s(φ1(f )) for all f ∈ E 1 .
Some intrinsic properties of simple graph $C^*$-algebras
Otherwise assume that o ¨f (∗X ) = 0 then V ( ¨f − o ¨f ) = V ( ¨f ) = V (f ). ¨f − o ¨f has smaller number of monomials than f .
Elements of Nonstandard Algebraic Geometry
Though we do not define rearrangements precisely here, it suffices to note that such rearrangements always exist for measurable f , and whenever f ∗ is a rearrangement of f , we have ||f ||A = ||f ∗ ||A and ||f ||1 = ||f ∗ ||1 and RD A(|∇f (η )|)dη = RD ′ A(|∇f ∗(η )|)dη .
Random Surfaces
Taking g = z + εv(z ) in the group law leads to γf +εv(f )F = γf · F + εγf · (v · F ) + o(ε), where v · F (z ) ≡ v(z )F ′ (z ) is the standard action of vector fields on functions.
Conformal field theories in random domains and stochastic Loewner evolutions
We denote by Λ♮ : Af f (T ) → Af f (S ) the unital positive linear continuous map defined by Λ♮(f )(s) = f (Λ(s)) for f ∈ Af f (T ). A positive linear map ξ : Af f T (A) → Af f T (B ) is said to be compatible to α if ξ ( ˆp)(τ ) = τ (α(p)) for all τ ∈ T (B ) and any pro jection p ∈ M∞ (A).
Simple nuclear $C^*$-algebras of tracial topological rank one
V \{0} = ∪F ′ ∈F ′ F ′′\F ′ , where F ′′ ∈ F ′′ is the immediate successor of F ′ ∈ F ′ .
Ind--varieties of generalized flags as homogeneous spaces for classical ind--groups
We define a flag in V to be a chain of subspaces F satisfying (ii) and which is isomorphic as an ordered set to a subset of Z. A flag can be equivalently defined as a chain of subspaces F for which there exists a strictly monotonic map of ordered sets ϕ : F → Z and, in addition, ∩F ∈F F = 0 and ∪F ∈F = V .
Ind--varieties of generalized flags as homogeneous spaces for classical ind--groups
Then H ′ ⊂ F ′ and hence H ′′ ⊂ F ′ , i.e. v ∈ ∪G′′ ∈F ′′ ,G′′⊂F ′′ ,G′′ 6=F ′′ G′′ which proves that F ′ ⊂ ∪G′′ ∈F ′′ ,G′′⊂F ′′ ,G′′ 6=F ′′ G′′ .
Ind--varieties of generalized flags as homogeneous spaces for classical ind--groups
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