The efficiency of interaction of radiation with a particle and hence its optical properties depend on the particle chemical composition, size, shape, structure, etc. ... Particle size expressed in units of the wavelength of incident radiation, together with chemical composition, most strongly affects the optical properties of a scatterer. ... There are many methods to solve the light-scattering problem for a homogeneous spheroid (our survey of the light-scattering methods see here ). ...

Reflection Nebulae Plots . Single Scattering Albedo . ... Scattering Phase Function Asymmetry . ... Reflection Nebulae Studies . ... Witt et al. ... RN1 . ... UV determinations of g not included . ... Yes . ... Burgh, E. B., McCandliss, S. R., & Feldman, P. D. 2002, ApJ, 575, 240 . Calzetti, D., Bohlin, R. C., Gordon, K. D., Witt, A. N., & Bianchi, L. 1995, ApJ, 446, L97 . ... Interstellar dust scattering properties from: [ Diffuse Galactic Light ] [ Reflection Nebulae ] [ Dark Clouds ] . ...

... It has been largely superceded by MatWeb . Conversion Factors . Material properties . Physical constants . Astronomical constants . This table gives conversion factors to convert various units to their SI equivalents. ... The units are SI. This is a short list of physical constants in SI units. ... Boltzmann constant . ... Gas constant . ... Mass . ... Plank's . ... Radiation constant . ... This is a short list of astronomical constants in SI units. ... Sun . ...

Polarization properties of two pulsars R. N. Manchester (ATNF, CSIRO, Australia) . ... Abstract Mean pulse polarization properties at 1.4, 4.6 and 8.3 GHz and rotation measures are presented for two pulsars with unusually wide profiles. PSR J0437-4715 is a millisecond pulsar with significant emission over at least 80% of the pulse period. It shows a complicated variation of linear position angle across the pulse indicating substantial departures from a dipole field structure. ...

... Ionization Properties of the Dusty Mesosphere . Boris A. Klumov, Sergey I.Popel Institute for Dynamics of Geopsheres, Russia . ... The problem of influence of the dynamics and charging of dust particles on the ionization properties of the polar summer mesosphere is considered. ... We introduce the notion "dusty mesosphere" for the layer of the mesosphere at the altitudes of approximately 80-90 km, where the conditions for the nucleation and formation of macro (dust) particles are fulfilled. ...

Next: EVOLUTION MODELS Up: EXTREME HELIUM STARS: PULSATION Previous: EXTREME HELIUM STARS . The characteristic surface properties, effective temperature , surface gravity and composition , of EHes have been summarized by Jeffery (1996). ... Helium: ( ) By definition, helium dominates the atmospheric abundances. ... This is supported by a correlation between N and Fe abundances in EHes. ... Next: EVOLUTION MODELS Up: EXTREME HELIUM STARS: PULSATION Previous: EXTREME HELIUM STARS Simon Jeffery . ...

... Physical Properties of Crystals . ... The course is an introduction into crystal physics and consists of two introductory parts devoted to the basics of crystallography and tensor analysis and six main chapters in which the physical phenomena in anisotropic medium are described by the example of the elastic, electrical and magnetic crystal properties. The effect of symmetry is also discussed. ... Effect of symmetry on crystal properties. ... Effect of symmetry on crystal optical properties. ...

... This chapter documents all the JavaScript objects, along with their methods and properties. ... Full entries for each object appear in alphabetical order; properties and functions not associated with any object appear in Ch