16,572 research outputs found
Gauge Interactions in the Dual Standard Model
We present a geometric argument for the transformation properties of SU(5)
--> S(U(3) x U(2)) monopoles under the residual gauge symmetry. This strongly
supports the proposal that monopoles of the dual standard model interact via a
gauge theory of the standard model symmetry group, with the monopoles having
the same spectrum as the standard model fermions.Comment: 4 pages. two column style. LaTe
Vacuum Geometry
We analyse symmetry breaking in general gauge theories paying particular
attention to the underlying geometry of the theory. In this context we find two
natural metrics upon the vacuum manifold: a Euclidean metric associated with
the scalar sector, and another generally inequivalent metric associated with
the gauge sector. Physically, the interplay between these metrics gives rise to
many of the non-perturbative features of symmetry breaking.Comment: 20 pages. no figure
A study of factors affecting the steady spin of an airplane
Data from wind-tunnel tests on a model of the NY-1 airplane were used in a study of the effect on the steady spin of a number of factors considered to be important. The factors were of two classes, mass distribution effects and aerodynamic effects. The study indicated that mass extended along the longitudinal axis has no detrimental effect or is even slightly beneficial, mass extended along the lateral axis is detrimental if the airplane spins with the inner wing tip far down, and mass extended along the normal axis, if of considerable magnitude, has a strong favorable effect. The aerodynamic effects considered in terms of rolling, pitching, and yawing moments added to those for a conventional airplane showed that added stable rolling moment could contribute favorable effect on the spin only in decreasing the amount of inward sideslip required for equilibrium. Negative pitching moment of moderate magnitude has unfavorable effect on a high-angle-of-attack spin, and stable yawing moment has pronounced beneficial effect on the spin. Experimental data from various sources were available to verify nearly all the deductions resulting from the study of the curves. When these results were considered for the purpose of deciding upon the best means to be developed for controlling the spin, the yawing-moment equilibrium was found to offer the most promising field for research. The wing-cellule yawing moment, of which the shape of the chord-force curve is an approximate measure, should be made as small as possible in the unstable sense and the damping yawing moment of the tail should be made as large as possible. The most serious unfavorable effect on the damping yawing moment of the tail is the blanketing of the vertical surfaces by the other parts of the tail
Computer program for Video Data Processing System /VDPS/
Video data from spacecraft photographic mission telemetry is scanned to generate digital tape computer program which prints out intensity points, cleans noise and telemetry drop-out, enhances contrast, modifies the picture, and calculates contour lines. The output is converted into new photographic film
Responding to Morally Flawed Historical Philosophers and Philosophies
Many historically-influential philosophers had profoundly wrong moral views or behaved very badly. Aristotle thought women were “deformed men” and that some people were slaves “by nature.” Descartes had disturbing views about non-human animals. Hume and Kant were racists. Hegel disparaged Africans. Nietzsche despised sick people. Mill condoned colonialism. Fanon was homophobic. Frege was anti-Semitic; Heidegger was a Nazi. Schopenhauer was sexist. Rousseau abandoned his children. Wittgenstein beat his young students. Unfortunately, these examples are just a start.
These philosophers are famous for their intellectual accomplishments, yet they display serious moral or intellectual flaws in their beliefs or actions. At least, some of their views were false, ultimately unjustified and, perhaps, harmful.
How should we respond to brilliant-but-flawed philosophers from the past? Here we explore the issues, asking questions and offering few answers. Any insights gained here might be applicable to contemporary imperfect philosophers, scholars in other fields, and people in general
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