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Hall, J. L. – Science, 1978
Traces the development of stabilized lasers from the Massachusetts Institute of Technology passive-stabilization experiments of the early 1960s up through the current epoch of highly stabilized helium-neon and carbon dioxide and continuous wave dye lasers. (Author/HM)
Descriptors: Lasers, Measurement, Optics, Physics

Patel, C. K. N. – Science, 1978
Discusses the use of laser spectroscopy in determining the presence of specific gaseous constituents. Three of currently used modes for laser detection of pollution are reviewed; (1) long-path measurements; (2) laser raman (differential absorption) measurements; and (3) optoacoustic detection. (HM)
Descriptors: Lasers, Measurement, Optics, Physics

Rentzepis, P. M. – Science, 1978
Describes a currently used picosecond spectroscopy system capable of reliably recording picosecond events. Two areas of picosecond research are discussed: one concerns the interaction of electrons in fluids; the second, the primary events in vision. (Author/HM)
Descriptors: Biological Sciences, Chemistry, Lasers, Optics

Schawlow, Arthur L. – Science, 1978
Surveys new laser techniques and a variety of spectroscopic experiments that can be used to detect, measure and study very small numbers of atoms on molecules. The range of applicability of these techniques is also included. (HM)
Descriptors: Atomic Structure, Lasers, Optics, Physics

Rosencwaig, Allan – Science, 1982
Thermal features of and beneath the surface of a sample can be detected and imaged with a thermal-wave microscope. Various methodologies for the excitation and detection of thermal waves are discussed, and several applications, primarily in microelectronics, are presented. (Author)
Descriptors: College Science, Electronics, Higher Education, Laboratory Procedures

Fassel, Velmer A. – Science, 1978
Describes the use of atomic spectra that are excited in inductively coupled plasmas for the simultaneous or sequential determination of the elements at all concentration levels. (HM)
Descriptors: Atomic Structure, Chemical Analysis, Chemistry, Metal Industry