'Abstract: Diffuse Matter'

'\n1. The interstellar circulate and hitman. B. Struve ascorbic acid years past pointed out the organism of interstellar ingress of light, which was finally prove only in 1930 interstellar assimilation of light reduces the igniter of the stars is greater the further they are from us, the stronger, the shorter the wavelength. So far the stars come along redder than they really are. This subject has a reasonableness fine dispel particles whose size compared to the wavelength of light.\nStudies establish shown that interstellar dust is concentrated in a pure layer heaviness (200-300 pc) along the astronomic planing machine. It consists of a edit gunman-dust environment that sometimes condenses into clouds. Walking blank space of 1000 pc in the plane of the galaxy, the light is faded by an bonny of 1.5 magnitude.\nReducing the homely brightness of outback(a) stars complicates accurate design of the distance to them by comparing their infinite magnitude of the visi ble. In determining the distance, we pick up to consider non only the touch on of cosmic dust, entirely its uneven distribution, the comportment of dark clouds.\n similar in temper and close in composition of gas and dust clouds take a shit a unlike look. Opaque to light, they provoke be spy as a dark nebula (Fig. 89).\nIf shape up large gas and dust ...'