EMF Research Studies

Power Density in Near Field of Small Linear Antennas, Serial No. 1

Wang, JCH · 1975

DIRECT OBSERVATION OF THE ROTATION IN A CONSTANT MAGNETIC FIELD OF HIGHLY ORGANIZED LAMELLAR STRUCTURES

J. D. CLEMENT-METRAL · 1975

The Distribution of Heating Potential Inside Lossy Spheres

Kritikos JN, Schwan HP · 1975

Researchers modeled heating potential in a lossy sphere with brain-tissue electrical properties across 10 MHz to 12 GHz. Hot spots appeared inside the sphere only for radii between 0.1 cm and 8 cm and frequencies between 300 MHz and 12,000 MHz. The heating potential was always non-uniform, and when maximized inside the sphere it exceeded plane-slab estimates by about a factor of ten. In the quasi-physical optics region the hot spot forms a ring slightly behind the sphere's center. In the resonance region the hot spot collapses to a point on the front half of the axis.

Measurement of power density from marine radar, DHEW Publication (FDA) 76-8004

Peak DW, Conover DL, Herman WA, Shuping RE · 1975

TRANSISTOR COLLECTOR BREAKDOWN IN THE PRESENCE OF CONDUCTED EMP AND GAMMA RADIATION

D. H. Rice · 1975

The model showed that common emitter breakdown voltage is reduced, latch voltage remains unchanged, and negative resistance characteristics are altered. Experimental results showed good agreement between predicted and observed circuit responses when transistors were exposed to rising collector voltage from EMP and simultaneous gamma radiation. In tests with 25-volt transistors, breakdown and latch occurred at 15.5 volts collector supply with a gamma pulse of 5 X 10' rads/sec.

Direct Demonstration of Dielectric Breakdown in the Membranes of Valonia utricularis

Hans G. L. Coster, Ulrich Zimmermann · 1975

Researchers increased the membrane potential of Valonia utricularis cells rapidly by applying ~500 ws current pulses. Dielectric breakdown occurred when the membrane potential reached ~0.85 V, shown by a discontinuous increase in current. The breakdown was reversible and could be repeated after a resealing time of approximately 10 seconds. When pulses were repeated with less than 10 seconds between them, the cells deteriorated rapidly and breakdown could no longer be detected. The rapidity of the breakdown ruled out a punch-through mechanism, while heating was ruled out by a separate argument.

Crossed-beam apparatus for simultaneous spectrophotometric observation and microwave exposure of biochemical samples

John W. Allis, Claude M. Weil, David E. Jones, Jr. · 1975

A waveguide applicator is mounted vertically in a Cary 15 spectrophotometer so the sample sits in both the light path and the microwave slot. Temperature of the irradiated and reference samples is monitored continuously and can be matched within a few tenths of a degree from 15 to 40 °C. Theoretical analysis showed about 16% of incident microwave power is absorbed by the sample, and measured temperature profiles confirmed relatively uniform heating in the upper half of the cuvette. Spectrophotometric tests found no artifacts from the microwave hardware and stray light remained below 0.01% up to an absorbance of 3.0.

Experimental Models for the Evaluation of Microwave Biological Effects

Czerski, P. · 1975

Magnetic fields of the human body

David Cohen · 1975

'73 Report Cites Biological Effects In Radio Project

George C. Wilson · 1975

Are the Weak Neutral Currents an Electromagnetic Effect?

B. Jouvet · 1975

Microwave ovens: what's cooking?

Don Mennie · 1975

BROADCAST RADIATION: A SECOND LOOK

R.A. Tell, D.E. Janes · 1975

The EPA extended its analysis of broadcast radiation by calculating power densities at roof and ground levels near FM installations using vertical radiation patterns and FCC antenna height data. The study found that grating lobes from FM and VHF-TV antennas can produce ground-level electric field strengths as intense as the main lobe at the same distance. Field measurements in Las Vegas recorded a maximum power density of 10.8 µW/cm² from broadcast stations, while Washington DC measurements showed that broadcast stations and nearby radar installations were the principal component of total power density. Predicted rooftop power densities reached 9.1 mW/cm² in Minneapolis and 5.6 mW/cm² at Shell Plaza in Houston, approaching the OSHA occupational limit of 10 mW/cm².

Thermoregulatory, metabolic, and cardiovascular response of rats to microwaves

Richard D. Phillips et al. · 1975

A review of microwave radiation hazards and safety standards

Lindsay IR · 1975

Effects of electromagnetic radiation on the nervous system

W. R. Adey · 1975

The effect of ionizing radiation combined with microwaves on permeability of the histo-hematic barrier

Fa'itel'berh-Blank VR, Orlova AV · 1975

A MINIATURE BROAD-BAND ELECTRIC FIELD PROBE

H. Bassen, M. Swicord, J. Abita · 1975

Contrast of dose distribution in phantom heads due to aperture and plane wave sources

Henry S. Ho · 1975

CHANGES IN RADIOFREQUENCY E-FIELD STRENGTHS WITHIN A HOSPITAL DURING A 16-MONTH PERIOD

Paul S. Ruggera · 1975

Variable frequency exposure system for small biological specimens

McRee D, Walsh P, Mathew R · 1975

The system provides continuous wave and modulated electromagnetic radiation across the 1-10 GHz frequency range. Field uniformity at the specimen location is ±10% over 6 cm and 20% over 9 cm at 10 GHz, and within ±8% over 16 cm at 1 GHz. The system uses sweep oscillators and traveling wave tube amplifiers to generate radiation.

Some Health Aspects of High-Energy Society

Earl Cook · 1975

He calculates that more than eight units of fossil-fuel energy are consumed for every unit of food energy on the U.S. table. The paper identifies mutagenic and teratogenic effects of radiation, drugs, and chemicals as essentially unknown because multi-generation human tests have not been done. Over 98% of U.S. gross energy input comes from finite, nonrenewable fossil fuels that cannot be recycled.

Burns caused by simultaneous use of diathermy and ECG

Larsen JP, Eriksen T · 1975

Parallel plate microwave applicator

Van Koughnett AL, Kashyap SC, Dunn JG · 1975

Blindness, Deafness and Vestibular Dysfunction in a Microwave Worker

Milton M. Zaret, M.D. · 1975