A new imaging spectrometer allows a standard configuration acoustically-tuned optical filter to be used as a high quality imaging and spectrometer and would have applications in ground based and space borne multispectral imaging. NASA Tech Brief. 8.5" X 11"
Pages: 6
N0281192
$1.15
Automated Surface Profilometer
The proposed automated surface profile measuring system consists of three major components: a system controller, a dimensional device, and a mechanical X-Y scanner. NASA Tech Brief. 8.5" X 11"
Pages: 6
N0011194
$1.15
Diode-Laser Array Suppresses Extraneous Modes
An array of phase-locked GaAs/GaAlAs diode lasers produces a light beam with one main radiation lobe. The physical parameters of the laser diodes differ from each other in a way that favors oscillation in the fundamental supermode while suppressing oscillation in the higher-order modes. NASA Tech Brief. 8.5" X 11"
Pages: 16
N0004592
$2.95
Goethe's Approach to Colour
Extracts from Goethe's scientific work. Translations by Eleanor Merry. "Contribution to Optics"; "Researches into the Elements of a Theory of Colour"; "A Theory of Colour"; "Moral Effect of Colours". 8.5" X 11"
Pages: 52
P0004695
$7.5
Notes of a Course of Nine Lectures on Light
Some of the original and very valuable work this great scientist did in 1875. Tyndall was a contemporary of Keely's. He did a majority of the best scientific work concerning sound, vibration and light. Excellent treatise on the fundamentals of light much of which has been forgotten or didn't make it into "modern" textbooks.
Pages: 40
P0002692
$5.95
On The Undulatory Theory of Optics
Reprinted from the original 1866 text. Very early technical work on light and optics when the basics of light were first being deciphered. More forgotten insights? The 1800s is proving to be far more advanced scientifically, philosophically and morally than anyone ever suspected. 8.5" X 11"
Pages: 83
B0003692
$14.95
Optical System for Multispectral Scanner
The optical system for an airborne scanner has been built and tested. It is designed to image a 2.5 milliradian instantaneous field of view of the ground simultaneously onto 8 discrete detectors, each covering a fixed wavelength band. NASA Tech Brief. 8.5" X 11"
Pages: 27
N0171192
$3
Primordial Energy
What is "Kirlian" photography and how does it work? Mr. Sandes worked with high-energy discharge photography 40 years before the Kirlians heard of the subject. He explains why it occurs and how the process works. Surprisingly it is the magnetic properties of ozone creating the effects. 8.5" X 11"
Pages: 25
P0024488
$3.95
Propagation of an Arbitrary Electro-Magnetic Disturbance on Spherical Waves of Light and the Dynamical Theory of Diffraction
Very interesting and technical mathematical paper. 8.5" x 11"
Pages: 24
P0005489
$2.5
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