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Old 05-18-2018, 07:57 PM
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Markoul Markoul is offline
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Join Date: Mar 2016
Posts: 312
It is at the start where Dyetalon explains about that image (Parallel-Perpendicular Light Source) with a tiny incandescent lamp...

However he could explain better as difference wise...I am just guessing it is just one light.


One single light source produces always a halo cloud image of the field whereas a led ring produces the wire-frame flux image of the field.

Best Regards

MSc. Electronic and Computer Engineering, TUC, Greece
MSc. VLSI Systems Engineering, UMIST, U.K.
BSc. Electronic Systems Engineering, Victoria Univ. Manchester & UMIST
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