Ngokuqinisekileyo, ngekhe kulunge ekukhuseleni njenge-Warulan Warbird okanye i-Deathly Hallow, kodwa ukuba ulandela inkqubo ethe ngqo esetyenziswa ngabafundi kunye noonjingalwazi baseYunivesithi yaseRochester, uya kuba nesinye sezixhobo zokuqala yamacala amathathu, ngokuqhubekayo i-cloaking multidirectional. Iswiti.
Ingqondo kaNjingalwazi John Howell kunye nomfundi ophumelele isidanga uJoseph Choi (osuka kwisicatshulwa esingentla), iRochester Cloak ayisiyiyo isixhobo sakho sokuvala ubuchwephesha obuqhelekileyo; endaweni yokusebenzisa izinto ezingaqhelekanga ukugoba ukukhanya ujikeleze into ngokungathi ayikho, isebenzisa iilensi ezine eziqhelekileyo zokufumana abathengi ukufezekisa umphumo ofanayo.
Yibone isebenza:
Njengoko u-Choi ephawula, isebenza kuphela kwii-angles ezincinci kwaye ayinakho ukuvala eyona ndawo ifanelekileyo yentsimi yayo, kodwa ayizukuphazamisa imvelaphi ngasemva kwento okanye inike into xa utshintsha indawo, kwaye inokuba inyuswe ngokukhawuleza ukuba unayo iilensi zayo. IFizOrg iyacacisa :
Ukuze banxibe zombini into kwaye bashiye imvelaphi ingaphazanyiswa, abaphandi bagqibe ngohlobo lwelensi kunye namandla afunekayo, kunye nomgama ochanekileyo wokwahlula iilensi ezine. Ukuvavanya isixhobo sabo, babeka into ebhijelweyo ngasemva kwigridi yangasemva. Njengoko babejonga iilensi kwaye batshintsha indawo yabo yokubukela ngokuhamba ukusuka kwelinye icala ukuya kwelinye, igridi yatshintsha ngokufanelekileyo ngokungathi isixhobo sokuvala sasingekho. Kwakungekho kunqunyanyiswa kwimigca yegridi ngasemva kwento evaliweyo, xa kuthelekiswa nemvelaphi, kunye nobukhulu beigridi (ukukhulisa) ezihambelanayo.
Kodwa musa ukulithatha ilizwi labo. Ukuba ufuna ukuzenzela ngokwakho, konke okudingayo ziindidi ezifanayo zeelensi ezisetyenzisiweyo nguChoi noHowell. ( Nguyen ubala ukuba kuyakuxabisa i $ 150):
Thenga iiseti ezimbini zeelensi ezi-2 ezinobude obahlukeneyo bokugxila f1 kunye ne-f2 (iilensi ezi-4 zizonke, ezi-2 ezinobude obugxile kwi-f1, kunye nezi-2 ngobude obugxile kwi-f2)
Yahlula iilensi zokuqala ezi-2 ngesixa sobude bobude bazo (Ke f1 ilensi yilelensi yokuqala, f2 yilensi yesi-2, kwaye zahlulwe t1 = f1 + f2).
Yenza okufanayo kwiNyathelo 2 kwezinye iilensi ezimbini.
Yahlula iiseti ezimbini ngo-t2 = 2 f2 (f1 + f2) / (f1— f2) ngaphandle, ukuze ezi f2 zimbini zihlukane t2.
Isixhobo sokuvala yingqondo eyaziwayo ngokuthandabuzekayo kwisayensi nakwintsomi, kubandakanya I-Star Trek, uHarry Potter , Umrhwebi, nezinye izinto ezingenakubalwa — kodwa uJohn Howell ukholelwa ekubeni inzondelelo yethu kwezenzululwazi ngezi zixhobo zibaleka nzulu kunoko. Ndicinga ukuba abantu bonwabile ngokwenyani kukungabonakali, utshilo.
(nge Nguyen )
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