This book deals with light pollution and about the ways to reduce it.
Light pollution is one of the negative side-effects of artificial
outdoor lighting. The term light pollution is an unhappy one, but as no
better alternative seems to exist, it will be used throughout this book.
The function of all outdoor lighting is to enhance the visibility or the
aesthetics in the nighttime environment. The light should come where it
is needed. If not, it is spilled, causing economic and environmental
losses as well as disturbance and discomfort. The overall effects are
termed 'light pollution'; a major form of light pollution is the glow
extending over the night sky. Sky glow is discussed in many astronomical
textbooks and in many popular brochures. The present book is primarily
aimed at those responsible for outdoor lighting installations. Thus, an
engineering approach has been chosen. The level of the book is that of
'college' or 'University level'. The book is organized in two parts. The
first seven chapters cover the areas of general interest, and conclude
with recommendations. The second part deals with the scientific and
engineering elaboration of the first part. A number of examples are
included that refer to specific outdoor lighting installations and
projects that are directly related to the reduction of light pollution.
Finally, some information is given about the authors.