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Chapter1
Fundamentalterms,
definitionsandtools
1.1.Electromagneticenvironment
1.1.1.Perceptionandconsequencesofembedding
intheenvironment
Allsubjects,underneathhumanbeingsandallobjectsontheEarthare
embeddedintheelectromagneticenvironment.TheEarthstaticmagnetic
andelectricfieldsareexamplesofit.
InFig1.1spectrumofthemoduleoftheverticalcomponentofthe
electricfield|Ev|inthefrequencyrangefrom30MHzto1GHzinoneof
thepremisesattheWarsawUniversityofTechnologyisshown.Theblue
plotrepresentsintentionalsignals.By100MHzradioFMbroadcastsare
visible,by200MHzTVchannels,above900MHzsignalsofthecellular
telephony.Moreover,serviceslikeemergencymedicalservice,police,fire
servicearealsopresent.Allthesesignalsareusefulforthefunctioning
ofthesocietybutcanbedisturbingforsomeoneorsomethingincidental.
Theredplotiscapturedbyswitchedondrillinghandtool.Sparksonthe
commutatorofthemotorincreasesignificantlythelevelofspectruminthe
widefrequencyrange.Itisawasteproductbyoperatingthetoolwhichis
evidentlythedisturbanceandnotatalldesirable.
Itisimpossibletoremove,compensateorflyawayfromtheelectro-
magneticenvironment.Humanbeingsandtheirartifactsareforcedtolive
andtooperateinitwithoutspoilingitexcessively,beingatthesametime
immuneenoughforperformanceasintendedinthepresenceofit.
