Extremely-low-frequency and very-low-frequency magnetic fields emitted by video display units.

Abstract:

:Extremely-low-frequency (ELF) and very-low-frequency (VLF) magnetic fields as emitted by monochrome and multichrome video display units (VDUs) were measured for their frequency domains. The rms magnetic-flux densities (MFDs) were measured as a function of distance from all six sides of VDUs of four types. The MFDs at a distance of 30 cm from the screen (defined as the operator's position) were between 0.06 and 0.6 microT in the ELF range and between 0.02 and 0.06 microT in the VLF range. The contribution of harmonics to the total MFD was the same for both frequency ranges, less than 6%. For the first three harmonics, the MFD of each higher harmonic was one-half that of the immediately lower harmonic.

journal_name

Bioelectromagnetics

journal_title

Bioelectromagnetics

authors

Tofani S,D'Amore G

doi

10.1002/bem.2250120106

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

35-45

issue

1

eissn

0197-8462

issn

1521-186X

journal_volume

12

pub_type

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