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Photoelectronic Imaging Devices
The past decade has seen a major resurgence in optics research and the teaching of optics throughout the major universities both in this country and abroad. Electrooptical devices have become a challenging form of study that has penetrated both the electrical engineering and the physics departments of most major schools. There seems to be something challeng ing about a laser that appeals to both the practical electrical engineer with a hankering for fundamental research and to the fundamental physicist with a hankering to be practical. Somehow or other this same form of enthusiasm has not previously existed in the study of photoelectronic devices that form images. This field of, endeavor is ...
Photoelectronic Imaging Devices
The past decade has seen a major resurgence in optical research and the teaching of optics in the major universities both in this country and abroad. Electrooptical devices have become achallenging subject of study that has penetrated both the electrical engineering and the physics departments of most major schools. There seems to be something about the laser that has appealed to both the practical electrical engineer with a hankering for fundamental research and to the fundamental physicist with a hankering to be practical. Somehow or other, this same form of enthusiasm has not previously existed in the study of photoelectronic devices that form images. This field of endeavor is becoming more and more sophisticated as newer forms of solid-state devices enter the field, not only in the data-processing end, but in the conversion of radiant energy into electrical charge patterns that are stored, manipulated, and read out in a way that a decade ago would have been considered beyond some fundamental limit or other.
Low-light-level Devices
The purpose of this report is to present in orderly fashion the key factors in the design, analysis, and characterization of low-light-level devices. The parameters of interest are those that have the greatest effect on the transfer of information from the scene before the lens of the television camera to the human looking at the picture tube. Part I examines specifications for low-light-level devices. Part 2 discusses criteria for image quality. Part 3 examines the human visual process and optical aids to that process under conditions of low illumination. Part 4 discusses the image intensifier as a device to aid vision at low light levels and lists the parameters of a variety of available i...
Musical Instruments
Music has been a part of every culture for many thousands of years and making music has long been considered an art form. Through the centuries, music has served many purposes, from primitive rituals to lavish court entertainment, ancient religious servcies to modern secular music. The development of musical instruments is a fascinating story: from the earliest music-making devices right through to the varied and sophisticated instruments being made and played today. Instrument-making is a highly skilled craft and pieces are often beautiful creations, works of art in themselves. Today, many early instruments are valued collectors' items.
Federal Register
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