✦ LIBER ✦

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

✍ Scribed by Dr. S. Tofani; G. D'Amore

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 487 KB
Volume: 12
Category: Article
ISSN: 0197-8462
DOI: 10.1002/bem.2250120106

No coin nor oath required. For personal study only.

✦ Synopsis

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.

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