The Theory of Cosmic Grains

The Theory of Cosmic Grains

5 (1 rating by Goodreads)
By (author)  , By (author) 

Free delivery worldwide

Available. Dispatched from the UK in 4 business days
When will my order arrive?

Description

Light scattering and absorption by small homogeneous particles can be worked-out exactly for spheres and infinite cylinders. Homogeneous particles of irregular shapes, when averaged with respect to rotation, have effects that can in general be well-approximated by reference to results for these two idealised cases. Likewise, small inhomogeneous particles have effects similar to homogeneous particles of the same average refractive index. Thus most problems can be solved to a satisfactory approximation by reference to the exact solutions for spheres and cylinders, which are fully stated here in the early part of the book. The sum of scattering and absorption, the extinction, is too large to be explained by inorganic materials, provided element abundances in the interstellar medium are not appreciably greater than solar, H 0 and NH3 being essentially excluded in the 2 general medium, otherwise very strong absorptions near 3p,m would be observed which they are not. A well-marked extinction maximum in the ultraviolet near 2200A has also not been explained satisfactorily by inorganic materials. Accurately formed graphite spheres with radii close to O.02p,m could conceivably provide an explanation of this ultraviolet feature but no convincing laboratory preparation of such spheres has ever been achieved.
show more

Product details

  • Hardback | 307 pages
  • 162.6 x 236.2 x 25.4mm | 612.36g
  • Dordrecht, Netherlands
  • English
  • 1991 ed.
  • IX, 307 p.
  • 0792311892
  • 9780792311898

Table of contents

1. Introduction. 2. Electromagnetic Properties of Small Particles. 3. Interstellar Extinction and Polarisation. 4. Reflection Nebulae and the Diffuse Galactic Light. 5. Interactions between Dust, Gas and Radiation. 6. Inorganic Theories of Grain Formation. 7. The Organic Grain Model. 8. Models of the Extinction and Polarisation of Starlight. 9. Spectroscopic Identifications. 10. Dust in External Galaxies. Index.
show more

Rating details

1 ratings
5 out of 5 stars
5 100% (1)
4 0% (0)
3 0% (0)
2 0% (0)
1 0% (0)
Book ratings by Goodreads
Goodreads is the world's largest site for readers with over 50 million reviews. We're featuring millions of their reader ratings on our book pages to help you find your new favourite book. Close X