A Practical Guide to the Determination of Human Exposure to by National Council on Radiation Protection and Measurements

By National Council on Radiation Protection and Measurements

Show description

Read or Download A Practical Guide to the Determination of Human Exposure to Radiofrequency Fields : Recommendations of the National Council on Radiation Protection A (NCRP Report No. 119) PDF

Similar electronics: radio books

Theory of defects in semiconductors

Semiconductor technological know-how and expertise is the artwork of disorder engineering. The theoretical modeling of defects has better dramatically during the last decade. those instruments are actually utilized to quite a lot of fabrics concerns: quantum dots, buckyballs, spintronics, interfaces, amorphous platforms, and so forth.

Contamination-Free Manufacturing for Semiconductors and Other Precision Products

Spotting the necessity for greater keep an eye on measures within the production strategy of hugely sensitized semiconductor expertise, this functional reference presents in-depth and complex remedy at the origins, methods, and disposal of various contaminants. It makes use of modern examples in response to the most recent and processing gear to demonstrate formerly unavailable effects and insights in addition to experimental and theoretical advancements.

Analogue IC Design: The Current-Mode Approach (EII Circuits and Systems Series) (Eii Circuits and Systems Series)

Analogue IC layout has develop into the basic ebook masking the current-mode method of built-in circuit layout. The procedure has sparked a lot curiosity in analogue electronics and is associated with very important advances in built-in circuit know-how -- reminiscent of CMOS VLSI which permits combined analogue and electronic circuits, and high-speed GaAs processing.

Extra resources for A Practical Guide to the Determination of Human Exposure to Radiofrequency Fields : Recommendations of the National Council on Radiation Protection A (NCRP Report No. 119)

Sample text

A plane wave. H is directed out of the page. 34 1 2. 7 Near Field In regions close to a source, the field is called the near field. In the near-field region, E and H are not necessarily perpendicular, and in fact, the field cannot always be conveniently characterized. The field is often more nonpropagating in nature and is called a fringing field, reactive field or induction field. The near field often varies rapidly with space. The mathematical expressions for E and H in the near field generally contain the terms r-l, r-', r-3,.

18(b) and (c) results, except the fields do not cancel to produce nodes. There are corresponding points a t which a minimum value of the field occurs, but they are not nodes because the field does not vanish there. 2. 19 shows a plane-wave obliquely incident on a perfect planar conductor. In this case, the angle of reflection is equal to the angle of incidence. The angles are defined as the angles between the direction of propagation and the normal (perpendicular)to the planar conductor. The sum of the incident and the scattered waves for oblique incidence is also a standing wave, but in this case, the nodes do not occur a t half wavelength spacing.

10 Poynting's Theorem (Power-Conservation Theorem) Poynting's theorem, which is an important statement relating the rate of energy absorption in an object to the incident fields, is often misunderstood and misinterpreted. Avoiding complicated mathematical expressionsis a goal of this Report, but explaining Poynting's theorem is a situation where a mathematical statement is necessary for a good explanation. Enough explanation will be given, however, to allow understanding with only a minimum knowledge of mathematics.

Download PDF sample

Rated 4.61 of 5 – based on 50 votes