42,531 research outputs found
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
The Statistical Agencies of the Federal Government: A Report to the Commission on Organization of the Executive Branch of the Government
Study of Permanent Magnet Focusing for Astronomical Camera Tubes
A design is developed of a permanent magnet assembly (PMA) useful as the magnetic focusing unit for the 35 and 70 mm (diagonal) format SEC tubes. Detailed PMA designs for both tubes are given, and all data on their magnetic configuration, size, weight, and structure of magnetic shields adequate to screen the camera tube from the earth's magnetic field are presented. A digital computer is used for the PMA design simulations, and the expected operational performance of the PMA is ascertained through the calculation of a series of photoelectron trajectories. A large volume where the magnetic field uniformity is greater than 0.5% appears obtainable, and the point spread function (PSF) and modulation transfer function(MTF) indicate nearly ideal performance. The MTF at 20 cycles per mm exceeds 90%. The weight and volume appear tractable for the large space telescope and ground based application
Exploring the impact and effectiveness of the Wirral Health Services in Schools (HSIS) programme
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