Kunyumba> mndandanda
Kwa zaka zambiri, mayeso a polygraph akhala akugwiritsidwa ntchito poyesa kulondola kwa zomwe wina akunena. Ndipotu, munthu anganene zoona kuti mayeso ozindikira bodza - chizindikiro cha sayansi - ndi a counterespionage. Ndi chida chamtengo wapatali kwambiri chomwe chingagwiritsidwe ntchito pofufuza milandu kuti athetse milandu ndikuwulula chowonadi.
The polygraph yamakono Kusintha kwa thupi la munthu akamayankha mafunso. Kusinthaku kumatha kukhudza kugunda kwa mtima, kuthamanga kwa magazi, ndi mpweya. Nthawi zambiri anthu amakhala ndi yankho la thupi akamanama lomwe ndi losiyana ndi limene amanena zoona. Munthu akamanama, makina ojambulira zithunzi amatha kuzindikira kusintha kwa thupi ndikudziwa amene akunyenga.
Munthu wamakono amene amachita polygraph amamva kugunda kwa biosensor yomwe imayankha ku mayankho a zamoyo. Masensa amazindikira mayankho a thupi la munthuyo pamene akuyankha mafunso angapo. Mafunso ofunsidwawo ndi osavuta ndipo ena mwa iwo adzakhala ovuta; izi zimachitika kuti ayesere luso lake pamavuto. Aliyense amene ayamba kuwoneka wodandaula komanso wopsinjika maganizo akamayankha mafunso enaake…. mwina amanama.
pamene polygraph yamakono Ikhoza kukhala chida chothandiza, ndikofunikira kumvetsetsa kuti makina awa nthawi zonse samakhala olondola. Palinso ena omwe amatha kudziwa momwe thupi lawo limayankhira kapena kusonyeza zizindikiro zonyenga akamanama. Ichi ndichifukwa chake zotsatira za mayeso ozindikira mabodza sizingagwiritsidwe ntchito kukhothi. M'mbuyomu, amagwiritsidwa ntchito kwambiri ngati njira yobweretsera ofufuza patsogolo panjira yofufuzira.
Komabe, polygraph yamakono Zitha kukhala zida zamtengo wapatali pakufufuza milandu. Zingathandize ofufuza kuti aziika patsogolo okayikira kapena kudziwa kuti munthuyo akuchitadi zoona pa gawo lomwe lachitika pakuchita upandu. Ofufuza amachita mayeso osachepera 10 a polygraph pa anthu omwe ali pafupi naye kuti alembe zambiri zomwe zikusowa ndikutha kuthetsa milandu mwachangu.
Ngakhale kuti mtundu waposachedwa wa mayeso a polygraph ukhoza kukhala chida chothandiza, siwopanda pake. Kumbukirani kuti zotsatira zake zimatha kusiyana kwa woyesa aliyense payekha komanso woyesa. Ichi ndichifukwa chake zotsatira za polygraph ziyenera kuonedwa ngati chidziwitso chimodzi chokha pakufufuza kulikonse kwaupandu.
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