CONSTRAINTS OF THERMAL NOISE ON THE EFFECTS OF WEAK 60-HZ MAGNETIC-FIELDS ACTING ON BIOLOGICAL MAGNETITE

被引:47
作者
ADAIR, RK
机构
[1] Department of Physics, Yale University, New Haven
关键词
D O I
10.1073/pnas.91.8.2925
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Previous calculations of limits imposed by thermal noise on the effects of weak 60-Hz magnetic fields on biological magnetite are generalized and extended to consider multiple signals, the possibility of anomalously large magnetosome structures, and the possibility of anomalously small cytoplasm viscosities. The results indicate that the energies transmitted to the magnetite elements by fields less than 5 muT, characteristic of the electric power distribution system, will be much less than thermal noise energies. Hence, the effects of such weak fields will be masked by that noise and cannot be expected to affect biology or, therefore, the health of populations.
引用
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页码:2925 / 2929
页数:5
相关论文
共 13 条
[1]   CONSTRAINTS ON BIOLOGICAL EFFECTS OF WEAK EXTREMELY-LOW-FREQUENCY ELECTROMAGNETIC-FIELDS [J].
ADAIR, RK .
PHYSICAL REVIEW A, 1991, 43 (02) :1039-1048
[2]   EFFECTS OF ELF MAGNETIC-FIELDS ON BIOLOGICAL MAGNETITE [J].
ADAIR, RK .
BIOELECTROMAGNETICS, 1993, 14 (01) :1-4
[3]   CONSTRAINTS ON BIOLOGICAL EFFECTS OF WEAK EXTREMELY-LOW-FREQUENCY ELECTROMAGNETIC-FIELDS - REPLY [J].
ADAIR, RK .
PHYSICAL REVIEW A, 1992, 46 (04) :2185-2187
[4]   THEORETICAL SINGLE-DOMAIN GRAIN-SIZE RANGE IN MAGNETITE AND TITANOMAGNETITE [J].
BUTLER, RF ;
BANERJEE, SK .
JOURNAL OF GEOPHYSICAL RESEARCH, 1975, 80 (29) :4049-4058
[5]  
FRANKEL RB, 1986, HDB BIOL EFFECTS ELE, P169
[6]   VISCOSITY OF CELLULAR PROTOPLASM [J].
KEITH, AD ;
SNIPES, W .
SCIENCE, 1974, 183 (4125) :666-668
[7]   MAGNETITE BIOMINERALIZATION IN THE HUMAN BRAIN [J].
KIRSCHVINK, JL ;
KOBAYASHIKIRSCHVINK, A ;
WOODFORD, BJ .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1992, 89 (16) :7683-7687
[8]  
KIRSCHVINK JL, 1992, J GEN PHYSL S, P225
[9]   A NONSELECTIVE CATION CHANNEL ACTIVATED BY MEMBRANE DEFORMATION IN OOCYTES OF THE ASCIDIAN BOLTENIA-VILLOSA [J].
MOODY, WJ ;
BOSMA, MM .
JOURNAL OF MEMBRANE BIOLOGY, 1989, 107 (02) :179-188
[10]  
POLLARD EC, 1979, AQUEOUS CYTOPLASM, P9