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Topic: The Far Field


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In the News (Tue 22 Dec 09)

  
  Fundamentals of EM Waves - Microwave Encyclopedia - Microwaves101.com
In the quasi-static near field we see fields that strongly resemble the electrostatic fields of a charge dipole for a dipole antenna and the fields of a magnetic dipole for a loop antenna.
From the near field to the far field, EM radiation changes from spherical waves to plane waves.
In the far field, E-field and H-field are proportional to 1/radius.
www.microwaves101.com /encyclopedia/absorbingradar1.cfm   (768 words)

  
 Tsunamis Generated by the Paroxysmal Eruptions, Explosions, Caldera Collapses and Slope Failures of the Krakatau ...
The near field effects of the main tsunami along the Sunda Strait in Western Java and Southern Sumatra were devastating.
The far field effects of the tsunami were noticeable around the world, but insignificant.
They were heard as far away as 3,540 kilometers (2,200 miles) away in Australia, and even as far away as Rodrigues Island which is 4,653 km (2,908 miles) away to the west-southwest, in the Indian Ocean, about 1,000 miles (1,600 km) east of Madagascar.
www.drgeorgepc.com /Tsunami1883Krakatau.html   (6593 words)

  
 Publications - IDTechEx
We assess the technologies that are available and emerging, players, challenges, the opportunity and give ten year forecasts.
Learn the unique benefits of Dynamic Short Range Communications, ZigBee, Bluetooth, WiFi, RFID and Near Field Communication, and explore how they can be used together to great effect.
Everyone agrees that item level tagging is going to be the biggest market for RFID in terms of both spend and number of tags sold.
www.idtechex.com /products/en/publications.asp   (1302 words)

  
 Veröffentlichungen
*The list of publications gives a selection covering the fields of interest in Applied Optics, Digital Image Analysis, Bioinformatics, Biophysics and Biophotonics, Biomolecular Labelling Techniques, and applications in Molecular Cytogenetics and Nuclear Genome Structure Research.
Hausmann, M. Crone, C. Cremer (1996): Depth of field and improved resolution of slit-scan flow systems.
Cremer, T. Cremer (1978): Considerations on a Laser-Scanning-Microscope with high resolution and depth of field.
www.kip.uni-heidelberg.de /AG_Cremer/pubmain.html   (4114 words)

  
 RIT CIS - Research - Biomedical Imaging
Daly, C. J.; Nuteson, T. D.; Rao, N “The Spatially Averaged Electric Field in the Near Field and far Field of a Circular Aperture” IEEE Trans.
Szczepaniak, E; Hornak, J. ESR Imaging Based on the Modulation Field Phase J.
Hornak, J. umowski, J; Bryant, R. Mapping Radiofrequency Magnetic Fields 6th Annual Meeting of the Society of Magnetic Resonance in Medicine, New York, NY 1987.
www.cis.rit.edu /content/view/102/166   (1748 words)

  
 Encyclopedia of Laser Physics and Technology - beam parameter product, BPP, beam quality, radius, divergence, far field   (Site not responding. Last check: 2007-11-01)
Encyclopedia of Laser Physics and Technology - beam parameter product, BPP, beam quality, radius, divergence, far field
Equipment for measuring the beam parameter product can be purchased from:
The beam parameter product (BPP) of a laser beam is defined as the product of beam radius (measured at the beam waist) and the beam divergence half-angle (measured in the far field).
www.rp-photonics.com /beam_parameter_product.html   (275 words)

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