1,040 research outputs found
The Asymmetric Rotor. IX. The Heavy Water Bands at 2787 cm^–1 and 5373 cm^–1
The combination band (110) of the two stretching fundamentals of D2O is reported and analyzed to yield nu0=5373.2 cm^–1 and the excited state moments of inertia 1.910, 3.931, and 5.929×10^–40 g cm^2. The same method of analysis applied to the unsymmetrical fundamental band (100) envelope gives nu0=2787.5 cm^–1 and the excited state moments 1.881, 3.876, and 5.843×10^–40 g cm^2
Effects of magnetic fields on radiatively overstable shock waves
We discuss high-resolution simulations of one-dimensional, plane-parallel
shock waves with mean speeds between 150 and 240 km/s propagating into gas with
Alfven velocities up to 40 km/s and outline the conditions under which these
radiative shocks experience an oscillatory instability in the cooling length,
shock velocity, and position of the shock front. We investigate two forms of
postshock cooling: a truncated single power law and a more realistic piecewise
power law. The degree of nonlinearity of the instability depends strongly on
the cooling power law and the Alfven Mach number: for power-law indices \alpha
< 0 typical magnetic field strengths may be insufficient either to stabilize
the fundamental oscillatory mode or to prevent the oscillations from reaching
nonlinear amplitudes.Comment: 11 text pages, LaTeX/AASTeX (aaspp4); 5 figures; accepted by Ap
The Merry Wives by William Shakespeare (review)
Theatre review. The Merry Wives. By William Shakespeare. Directed by Barrie Rutter. Northern Broadsides and The Everyman Theatre, Cheltenham, UK. April 19, 2016
Review of David J. Baker, On Demand: Writing for the Market in Early Modern England.
David J. Baker, On Demand: Writing for the Market in Early Modern England. Stanford: Stanford University Press, 2010 199 pp (+xviii) ISBN 9780804738569
Subjectivity in Shakespeare's sonnets
This thesis undertakes a study of Shakespeare's sonnets that seeks to locate them in the determinate historical circumstances of the moment of their
production. Subjectivity in the sonnets is read as the location of a series of conflicts which are ultimately socio-historical in nature. Contemporaries
identified the sonnet form as a discourse of the aristocracy, especially in its manifestation of courtly love. Shakespeare's sonnets attempt to manage the pressures that the history of the late sixteenth century impose upon this discursive formation from
within the genre itself. The first and second
chapters of the thesis set out the historical
framework within which the generic requirements of the sonnet were played out, and discuss the tensions which result. Chapter three reads the first seventeen
sonnets in the light of this work, arguing against a view of these particular poems as a homogeneous group of marriage sonnets. These sonnets set out the homosocial considerations that underpin the
relationship between the addressor and the young nobleman in a way that foreshadows the conflicts that are played out in later poems. Chapter four traces these conflicts in terms of the subjectivity of the young man, noting that the historical crisis in the
ideology of the aristocracy renders his subject-position unstable. Chapter five relates this result to the related subjectivity of the adressor, the poetic persona of the poems, and reads his position
as noting the disjunctions in the dominant ideology, while nevertheless being unable to move away from its interpellation of his position. Chapter six notes the
consequent disruption of gendered identity, both for the "dark lady" and the poetic persona himself. The conclusion argues for a materialist perspective on the sonnets' problematising of subjectivity in the
Renaissance
Review of David J. Baker, On Demand: Writing for the Market in Early Modern England.
David J. Baker, On Demand: Writing for the Market in Early Modern England. Stanford: Stanford University Press, 2010 199 pp (+xviii) ISBN 9780804738569
Radiative instabilities in simulations of spherically symmetric supernova blast waves
High-resolution simulations of the cooling regions of spherically symmetric
supernova remnants demonstrate a strong radiative instability. This
instability, whose presence is dependent on the shock velocity, causes
large-amplitude fluctuations in the shock velocity. The fluctuations begin
almost immediately after the radiative phase begins (upon shell formation) if
the shock velocity lies in the unstable range; they last until the shock slows
to speeds less than approximately 130 km/s. We find that shock-velocity
fluctuations from the reverberations of waves within the remnant are small
compared to those due to the instability. Further, we find (in plane-parallel
simulations) that advected inhomogeneities from the external medium do not
interfere with the qualitative nature of the instability-driven fluctuations.
Large-amplitude inhomogeneities may alter the phases of shock-velocity
fluctuations, but do not substantially reduce their amplitudes.Comment: 18 pages text, LaTeX/AASTeX (aaspp4); 10 figures; accepted by Ap
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