Simple models of the reflection nebula in the form of homogeneous plane-parallel slab containing single scattering silicate and graphite grains taken one species at a time have been considered in view of the far-ultraviolet ...

The extinction efficiencies for small smooth metallic particles (granules) have been calculated using rigorous Mie theory of scattering. Strong size-dependent resonances for spheres composed of sodium, potassium, and calcium ...