phin.

?a1425 (c1400) Mandeville's Trav. (Titus C.xvi) lf. 9^v Alpha. Betha. Gama. Deltha..iota. lapda..pi..tau..fy. chi. psi.

1575 W. Patten Cal. Script. 87 Between the Hebru Pe..., the Greek Phi, and oour common F. and Ph. so small matter is made of the Authoours heer, as many woords (haply) lookt for in Ph. ar too be foound in this F.

1687 J. Gretser Rudiments Greek Tongue i. 4 Φ..ϕ..ϕι..Phi..ph.

1746 T. Nugent tr. C. Lancelot et al. New Method of learning Greek Tongue I. i. i. 3 The Greeks have 24 letters..alpha..beta..gamma..phi..chi..[etc.].

1848 T. K. Arnold Elem. Greek Gram. 1 Upsilon, Phi, Chi, Psi.

1949 H. Peacey Meaning of Alphabet 72 The Greek phi, orig. = p'h, later = f.

2003 Mercury (Austral.) (Nexis) 11 Oct. (Weekend section) 43 Geoff has started a foundation in honour of his son. It is called Zero To One, and is symbolised by the Greek letter Phi.

1934 W. C. Krumbein in Jrnl. Sedimentary Petrol. 4 76 ξ is the numerical value of the diameter... The substitution ϕ = −log₂ ξ, or ξ = (½)^ϕ, is made in part for typographical convenience, but also to introduce a convenient symbol that may be used for expressing grain diameters.

1949 Jrnl. Sedimentary Petrol. 19 76/1 The sieve interval of one phi unit is too large to make the true and nominal mean diameters reasonably equal for all size fractions.

1961 Jrnl. Sedimentary Petrol. 31 205/2 Comparison of the mean diameters of each pair of beach-dune samples..shows that there is little difference between the two. In these comparisons, 48 are within 0·2 phi of each other.

1971 E. F. McBride in R. E. Carver Procedures Sedimentary Petrol. vi. 110 The Phi scale is now used almost exclusively for computation and is gradually replacing the millimeter scale.

1978 Nature 14 Sept. 100/2 These sands exhibit good sorting, with standard deviations that are generally less than 0·8 phi units.

1988 M. E. Tucker Techniques in Sedimentol. (BNC) 73 The larger the particle phi number the finer the particle.

1962 J. J. Sakurai in Physical Rev. Lett. 9 472/1 In a recent issue of this journal a Brookhaven-Syracuse group reports the possible presence of a narrow resonance (Γ ≈ 20 MeV) in the KK system with mass ≈1020 MeV in the reactions K⁻ + p → K⁺ + K⁻ + Λ, K⁰ + K⁰ + Λ. In discussing the quantum numbers of the resonating KK pair, which we tentatively refer to as the ϕ meson, [etc.].

1962 J. J. Sakurai in Physical Rev. Lett. 9 474/1 We would like to suggest that this discrepancy is due to mixing between ω and ϕ arising from the fact that the ω and ϕ have the same quantum numbers as far as spin-parity, isospin, and G-parity are concerned.

1971 Sci. Amer. July 100/2 Three vector mesons with zero strangeness are currently known: the rho, the omega and the phi.

1975 Sci. Amer. Oct. 48/2 Zweig's rule was formulated to explain the decay of the phi meson, which is made up of a strange quark and a strange antiquark and has a mass of about 1 GeV.

1996 Physics Lett. B. 388 141 For phi mesons, changes in their properties are of interest because they would affect the production rate in high energy nucleus-nucleus collisions.

1904 K. Pearson in Drapers' Co. Res. Mem.: Biometric Ser. I. 6 I shall call ϕ² = χ/Ν the mean square contingency.]

1929 Psychol. Rev. 36 241 The degree of similarity is measured in terms of the phi-coefficient, which enables us to allocate the attributes along a single continuum, and to measure the degree of similarity by scale separations on this continuum or scale.

1968 J. G. Blumler & D. McQuail Television in Politics iv. 75 All the phi coefficients of ·30 or higher (a level which is most unlikely to be reached by chance) were picked out.

1975 C. A. Morehouse & G. A. Stull Statistical Princ. Physical Educ. xi. 237 The phi coefficient is often recommended for use in the analysis of test items in which the items are scored as correct or incorrect, pass or fail.

2000 Jrnl. Consumer Res. 26 343/2 The phi coefficients, referring to the correlation between the similar dimensions in the two cultures.