Exposure details   Magnetophosphenes: a quantitative analysis of thresholds. by Lovsund P, Oberg PA, Nilsson SE, Reuter T published in: Med Biol Eng Comput 1980; 18 (3): 326 - 334 Exposure 1: Main characteristics frequency: 10 - 50 Hz type of field: magnetic field signal form: sinusoidal Exposure setup exposure source/structure: U-shaped electromagnet consisting of laminated iron plates with a coil on each arm distance between measurement device and exposed object: 2 cm exposure time pattern: 28 min setup details: each coil with 115 turns of insulated copper wire, coils connected in series, distance between the poles adjustable; magnet placed with the poles near the temporal area of the test person Exposure parameters parameter: value: type: method: remark: magnetic flux density  40 mT  mean value  measured  0 - 40 mT  Return to general data Glossary: 50 Hz, coil, copper, electromagnet, iron, magnet, magnetic field, magnetic flux density, mean value, signal, sinusoidal, temporal, test person

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