Briefly describes past and present uses of solar energy, especially for heating and electricity. Includes instructions for three simple experiments and a glossary.
Examines the history, formats, features, and uses of video tape recorders and discusses aspects such as music videos, video discs, piracy, and possible future developments.
Describes some existing and future telescopes and what they can tell us about outer space, with particular emphasis on the Edwin P. Hubble Space Telescope, which will begin orbiting Earth in the late eighties.