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  • Free-Space Optics: Propagation and Communication
    Free-Space Optics: Propagation and Communication. Presenting a history of wireless optical telecommunication, this book explains how free-space optics is taking off as a telecommunication technique, and is becoming an integral part of data-processing architecture and telecommunications. Books24x7
  • Microwave Nondestructive Testing of Composite Materials using Free-Space Microwave Measurement Techniques
    content, moisture content, etc.) by suitable modeling and calibration. We have employed a free-space microwave measurement (FSMM) system which can measure electromagnetic properties (complex permittivity, complex permeability, reflection coefficients, etc.) for evaluation of composite materials
  • Smart Computing Article - Free Software Foundation (FSF) to freeze
    is free space optics technology. FSO is a wireless, optical, point-to-point connection developed by the U.S. military some 30 years ago. This technology is similar to that of fiber optics, which sends data via light across glass, except that fiber-optic cable is not needed-thus reducing cost as well
  • CRASH-FREE LINEAR MOTION
    W H I T E P A P E R. CRASH-FREE LINEAR MOTION. One of the greatest threats to the long life of a linear motion system usually. occurs on its very fi rst stroke. How do you know when a linear bearing has reached its. end of travel? When the carriage hits the wall. At least, that. is how the old
  • Crash-Free Linear Motion
    _CrashFree_v6.indd W H I T E P A P E R. CRASH-FREE LINEAR MOTION. One of the greatest threats to the long life of a linear motion system usually. occurs on its very fi rst stroke. How do you know when a linear bearing has reached its. end of travel? When the carriage hits the wall. At least, that. is how
  • White Paper: Comparing Transformer-free to Transformer-based UPS Designs
    . In general, 200 kW is a threshold below which the space, weight and. cost advantages of transformer-free UPS systems outweigh the robustness and higher capacity capabilities. of transformer-based systems. These under-200 kW applications can benefit from the high efficiency and. excellent input power
  • White Paper: Computer Cooling Using Economizers and Free Cooling
    data center energy use doubled between 2000 and 2006 and predicts it will double again by 2012. Economizers-with their promise of "free-cooling"-are attracting much attention for their ability to reduce energy usage. Economizers also lessen wear and tear on precision cooling equipment and lower
  • FIBER BRUSHES: The Maintenance-Free Wind Turbine Slip Ring Contact Material
    Fiber brush technology allows the design of slip. rings for wind turbine applications that have a. minimum of 100 million revolutions of operational. life with no maintenance. þÿ. Document Number 203. FIBER BRUSHES: The Maintenance-Free Wind Turbine. By: Glenn Dorsey, PE. Slip Ring Contact Material

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