Pregled posta

Marketing

Radio Frequency and Microwave Power Measurement (IEE Electrical Measurement Series, 7)

Includes: Introduction to calorimeters. Dry load calorimeters. Thermoelectric power meters. Diode power meters. Calibration and comparison techniques. Connectors and adapters. Instruments and techniques for pulsed power measurements. Voltage current measurements.
Also available:
Radio Frequency and Microwave Power Measurement - ISBN 0863411207
Ferrites at Microwave Frequencies - ISBN 0863410642
The Institution of Engineering and Technology is one of the world's leading professional societies for the engineering and technology community. The IET publishes more than 100 new titles every year; a rich mix of books, journals and magazines with a back catalogue of more than 350 books in 18 different subject areas including:
-Power & Energy
-Renewable Energy
-Radar, Sonar & Navigation
-Electromagnetics
-Electrical Measurement
-History of Technology
-Technology Management

On the morning of the 24th of April 2009 employees at MeteoSwiss (Switzerland's Federal Office of Meteorology and Climatology) got the surprise of their lives. Huge circular fields hovering over Switzerland were picked up by their radars. The question was asked as to whether a massive UFO was in the upper-atmosphere above the scenic mountainous nation or perhaps these circles were signs of an imminent hurricane or maybe some sort of electromagnetic radio frequency/microwave technology is in use to cause such an anomaly.

Felix Schacher, a senior Meteorologist at MeteoSwiss claimed the circles were not UFOs or the signs of a hurricane about to wreak havoc on his country. Mr Schacher told the Swiss news site '20 Minutes' that they were merely caused by the reflection of water droplets that just happened to form a circular shape.

A few minutes after being queried on the issue the radar images were hurriedly removed from the departments website. Many Swiss UFO researchers have left comments on various internet forums expressing their doubt on the 'reflection water droplets' story, asking why was the image so quickly removed and who ordered its removal.

Many people also left some comments on forums asking if the interference patterns shown on the meteorological map, could be caused by trials in relation to the startup of the LHC - Large Hadron Collider near Geneve also, in Switzerland.

Please, feel free to comment!!

Radio frequencies occupy the range from a few tens of hertz to three hundred gigahertz, although commercially important uses of radio use only a small part of this spectrum. Other types of electromagnetic radiation, with frequencies above the RF range, are microwave, infrared, visible light, ultraviolet, X-rays and gamma rays. Since the energy of an individual photon of radio frequency is too low to remove an electron from an atom, radio waves are classified as non-ionizing radiation.

A boy is a young male human (usually child or adolescent), as contrasted to its female counterpart, girl, or an adult male, a man.
The term "boy" is primarily used to indicate biological sex distinctions, cultural gender role distinctions or both. The latter most commonly applies to adult men, either considered in some way immature or inferior, in a position associated with aspects of boyhood, or even without such boyish connotation as age-indiscriminate synonym. The term can be joined with a variety of other words to form these gender-related labels as compound words.
Ongoing debates about the influences of nature versus nurture in shaping the behavior of girls and boys raises questions about whether the roles played by boys are mainly the result of inborn differences or of socialization. Images of boys in art, literature and popular culture often demonstrate assumptions about gender roles.

Foundations and Industrial Applications of Microwaves and Radio Frequency Fields Physical and Chemical Processes G. Roussy Universite de Nancy 1, France J. A. Pearce University of Texas at Austin, USA This book presents microwave and radio frequency techniques from the point of view of industrial applications, with special attention to electromagnetic energy and material interaction at the microscopic level. Starting with a review of the complete set of macroscopic governing equations--including conduction processes--it then addresses microscopic interaction effects, describing many results from spectroscopic studies. Finally, industrial applications, including the emerging new field of microwave catalysis, are addressed. The technology presented is applied in the mineral, textile, paper, ceramic, chemical and last, but not least, the food industry.