Volume 4, Number 1 (5-2014)                   JHSW 2014, 4(1): 11-20 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Golmohammadi R, Ebrahimi H, Fallahi M, Soltanzadeh A, Mousavi S S. An investigation of Extremely Low Frequency (ELF) Electromagnetic field emitted by common Laptops. JHSW. 2014; 4 (1) :11-20
URL: http://jhsw.tums.ac.ir/article-1-5118-en.html

1- Associate professor Department of Occupational Health Engineering, School of Public Health, Hamedan University of Medical sciences, Hamedan , golmohamadi@umsha.ac.ir
2- MSc Department of Occupational Health Engineering, School of Public Health, Hamedan University of Medical sciences, Hamedan
3- MSc Department of Biological Statistics, School of Public Health, Hamedan University of Medical sciences, Hamedan
Abstract:   (5347 Views)

Introduction: Electromagnetic field emitted by laptops are known as extremely low frequency (ELF) Waves. The aim of this study was to investigate the intensity of electric and magnetic field with extremely low frequency emitted by common laptops.

.

Material and Method: Intensity of electric and magnetic field were measured on four sides of 40 common by used laptop at the distance of 30, 60 and 90 cm. Measurements ere done according to standard in four functional model including: non-performing turned on, sleep mode, performing office program and performing audio visual files.

.

Result: Magnetic field values for all laptops were almost constant and about 28-32 mA/m. The results of measurements related to the electric field showed different values at distances of 30, 60 and 90 cm around the laptops on four sides. Moreover, mean electric field on the keyboard at the four operating modes were statistically different for DELL and hp laptops (P< 0/05).

.

Conclusion: The results of this study showed that laptops produce extremely low frequency (ELF) electric and magnetic fields which their intensity depends on laptop type, laptop operation mode and the location of the measurement.

Full-Text [PDF 762 kb]   (1749 Downloads)    
Type of Study: Research | Subject: Special
Received: 2014/04/29 | Accepted: 2014/04/29 | Published: 2014/04/29

Add your comments about this article : Your username or email:
Write the security code in the box

Send email to the article author


© 2017 All Rights Reserved | Health and Safety at Work

Designed & Developed by : Yektaweb