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This is Volume 2 of the Ministry of Defence report 'Unidentified Aerial Phenomena in the UK Air Defence Region', Defence Intelligence Staff Scientific and Technical Memorandum 55/2/00, dated February 2000 and received 7 December 2000. It gathers 25 working papers on natural and man-made phenomena, meant as a reference for analysing UAP reports. The papers cover ball lightning, radar detection, balloons, satellites, mirages, plasma and similar subjects. One paper compares magnetic field experiments on human volunteers with close encounter reports. It concludes that effects from such fields are 'uncannily similar' to what witnesses describe.
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Key: i Threshold values for magnetophosphenes; the upper curve corresponds to magnetic fields where phosphenes were observed as patterns.
Changes in visually-produced potentials (from Silney, 1981].
$ D_{1} $ Experimental values for cardiac stimulations, calculated for humans from experiments conducted on animals (from Silney, 1986).
For curves A, B, C and D, see the notes given in Fig. 16.
Notes: 1. The magnetic field is varying sinusoidally.
2. Due to larger conductivities and current loops at a local level, induced body-current densities may exist at levels which are higher by one order of magnitude than those indicated.
FIGURE F-4: MAGNETIC FLUX DENSITIES WHICH INDUCE APPROXIMATELY THE INDICATED CURRENT DENSITIES IN THE BRAIN AND THE HEART OF A MAN Document, cited by the archive. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 258 pages are in the text index: search them above, or from the library's search.