Prof. Moran Bercovici ndi Dr. Valeri Frumkin apanga ukadaulo wotchipa wopangira magalasi a kuwala, ndipo ndizotheka kupanga zowonera m'maiko ambiri omwe akutukuka kumene komwe kulibe zowonera.Tsopano, NASA ikuti itha kugwiritsidwa ntchito popanga ma telescope amlengalenga
Sayansi nthawi zambiri imapita patsogolo pang'onopang'ono.Chidziwitso chaching'ono chimawonjezedwa ku kuyesa kwatsopano kulikonse.Sizichitika kawirikawiri kuti lingaliro losavuta lomwe limapezeka mu ubongo wa wasayansi limatsogolera ku kupambana kwakukulu popanda kugwiritsa ntchito zipangizo zamakono.Koma izi n’zimene zinachitikira mainjiniya aŵiri a ku Israel amene anatulukira njira yatsopano yopangira magalasi a kuwala.
Dongosololi ndi losavuta, lotsika mtengo komanso lolondola, ndipo likhoza kukhudza kwambiri gawo limodzi mwa magawo atatu a anthu padziko lapansi.Zingasinthenso mawonekedwe a kafukufuku wamlengalenga.Kuti apange, ochita kafukufuku amangofunika bolodi loyera, cholembera, chofufutira komanso mwayi pang'ono.
Pulofesa Moran Bercovici ndi Dr. Valeri Frumkin ochokera ku Mechanical Engineering Department ya Technion-Israel Institute of Technology ku Haifa amakhazikika pamakina amadzimadzi, osati optics.Koma chaka ndi theka chapitacho, pa World Laureate Forum ku Shanghai, Berkovic anakhala ndi David Ziberman, katswiri wa zachuma ku Israeli.
Zilberman ndi wopambana Mphoto ya Wolf, ndipo tsopano ku yunivesite ya California, Berkeley, adalankhula za kafukufuku wake m'mayiko omwe akutukuka kumene.Bercovic adalongosola kuyesa kwake kwamadzimadzi.Kenako Ziberman anafunsa funso losavuta: "Kodi mungagwiritse ntchito izi kupanga magalasi?"
"Mukaganizira za mayiko omwe akutukuka kumene, nthawi zambiri mumaganizira za malungo, nkhondo, njala," adatero Berkovic."Koma Ziberman adanena zomwe sindikudziwa nkomwe: anthu 2.5 biliyoni padziko lapansi amafunikira magalasi koma sangawapeze.Iyi ndi nambala yodabwitsa. "
Bercovici adabwerera kwawo ndipo adapeza kuti lipoti lochokera ku World Economic Forum latsimikizira chiwerengerochi.Ngakhale kuti kupanga magalasi osavuta kumangotengera madola ochepa okha, magalasi otsika mtengo sapangidwa kapena kugulitsidwa m’madera ambiri padziko lapansi.
Zotsatira zake n’zambiri, kuyambira kwa ana amene satha kuona bolodi kusukulu mpaka achikulire amene maso awo amawonongeka kwambiri moti amachotsedwa ntchito.Kuphatikiza pa kuwononga moyo wa anthu, mtengo wachuma padziko lonse lapansi ukuyembekezeka kufika ku US$3 thililiyoni pachaka.
Pambuyo pokambirana, Berkovic sanathe kugona usiku.Atafika ku Technion, adakambirana nkhaniyi ndi Frumkin, yemwe anali wofufuza zachipatala mu labotale yake panthawiyo.
"Tidajambula pa bolodi loyera ndikuyang'ana," akukumbukira."Tikudziwa mwachibadwa kuti sitingathe kupanga mawonekedwewa ndiukadaulo wathu wowongolera madzimadzi, ndipo tikufuna kudziwa chifukwa chake."
Mawonekedwe ozungulira ndiye maziko a optics chifukwa mandala amapangidwa ndi iwo.Mwachidziwitso, Bercovici ndi Frumkin ankadziwa kuti akhoza kupanga dome lozungulira kuchokera ku polima (madzi omwe anali olimba) kuti apange mandala.Koma zamadzimadzi zimatha kukhala zozungulira pang'ono.Zikakhala zazikulu, mphamvu yokoka imawagwetsera m'madzi.
"Chifukwa chake chomwe tiyenera kuchita ndikuchotsa mphamvu yokoka," adatero Bercovici.Ndipo izi ndi zomwe iye ndi Frumkin anachita.Ataphunzira bolodi lawo loyera, Frumkin adadza ndi lingaliro losavuta kwambiri, koma sizikudziwika chifukwa chake palibe amene adaziganizirapo kale-ngati lens imayikidwa mu chipinda chamadzimadzi, zotsatira za mphamvu yokoka zimatha kuthetsedwa.Zomwe muyenera kuchita ndikuwonetsetsa kuti madzi omwe ali m'chipinda (chotchedwa buoyant fluid) ali ndi kachulukidwe kofanana ndi polima pomwe lens imapangidwira, ndiyeno polima imayandama.
Chinthu chinanso chofunikira ndikugwiritsa ntchito madzi awiri osasunthika, kutanthauza kuti sangasakanizike, monga mafuta ndi madzi."Ma polima ambiri ali ngati mafuta, ndiye kuti madzi athu 'amodzi' ndi madzi," adatero Bercovici.
Koma chifukwa madzi ali ndi kachulukidwe kakang'ono kuposa ma polima, kachulukidwe kake kuyenera kuonjezedwa pang'ono kuti polima ayandama.Kuti izi zitheke, ofufuzawo adagwiritsanso ntchito zinthu zochepa zachilendo-mchere, shuga kapena glycerin.Bercovici adanena kuti chigawo chomaliza cha ndondomekoyi ndi chimango cholimba chomwe polima amalowetsamo kuti mawonekedwe ake athe kuyendetsedwa.
Polimayo ikafika pomaliza, imachiritsidwa pogwiritsa ntchito cheza cha ultraviolet ndipo imakhala lens yolimba.Kuti apange chimango, ochita kafukufukuwo adagwiritsa ntchito chitoliro chosavuta cha chimbudzi, chodula mu mphete, kapena mbale ya petri yodulidwa kuchokera pansi."Mwana aliyense amatha kuzipanga kunyumba, ndipo ine ndi ana anga aakazi timapanga kunyumba," adatero Bercovici.“Kwa zaka zambiri, takhala tikuchita zinthu zambiri mu labotale, zina mwazovuta kwambiri, koma n’zosakayikitsa kuti ichi ndi chinthu chosavuta komanso chophweka chimene tachita.Mwina chofunika kwambiri.”
Frumkin adapanga kuwombera kwake koyamba tsiku lomwelo lomwe adaganiza za yankho."Ananditumizira chithunzi pa WhatsApp," Berkovic adakumbukira."Tikayang'ana kumbuyo, iyi inali lens yaying'ono komanso yonyansa, koma tinali okondwa kwambiri."Frumkin anapitiriza kuphunzira zatsopanozi.“Equation imasonyeza kuti mukangochotsa mphamvu yokoka, zilibe kanthu kaya ndi centimita imodzi kapena kilomita imodzi;kutengera kuchuluka kwa zinthu, mudzakhala ndi mawonekedwe ofanana nthawi zonse.
Ofufuza awiriwa adapitilizabe kuyesa chopangira chachinsinsi cham'badwo wachiwiri, chidebe cha mop, ndikuchigwiritsa ntchito kupanga mandala okhala ndi mainchesi 20 omwe ndi oyenera ma telescopes.Mtengo wa lens ukuwonjezeka kwambiri ndi m'mimba mwake, koma ndi njira yatsopanoyi, mosasamala kanthu za kukula, zomwe mukufunikira ndizotsika mtengo polima, madzi, mchere (kapena glycerin), ndi nkhungu ya mphete.
Mndandanda wazinthuzo ukuwonetsa kusintha kwakukulu kwa njira zachikhalidwe zopangira ma lens zomwe zakhala zosasinthika kwa zaka 300.Pachiyambi choyamba cha chikhalidwe, galasi kapena mbale ya pulasitiki imapangidwa ndi makina.Mwachitsanzo, popanga magalasi owonera, pafupifupi 80% yazinthuzo zimawonongeka.Pogwiritsa ntchito njira yopangidwa ndi Bercovici ndi Frumkin, m'malo mopera zinthu zolimba, madzi amalowetsedwa mu chimango, kuti mandala apangidwe mopanda zinyalala.Njira imeneyi komanso sikutanthauza kupukuta, chifukwa mavuto padziko madzimadzi akhoza kuonetsetsa kwambiri yosalala pamwamba.
Haaretz adayendera labotale ya Technion, komwe wophunzira udokotala Mor Elgarisi adawonetsa momwe zimachitikira.Anabaya polima m’mphete ya m’kachipinda kakang’ono ka madzi, n’kukawalitsa ndi nyali ya UV, ndipo anandipatsa magolovesi opangira opaleshoni patadutsa mphindi ziwiri.Ndinalowetsa dzanja langa m'madzi mosamala kwambiri ndikutulutsa disolo."Ndizo, kukonza kwatha," Berkovic adafuula.
Magalasi ndi osalala kwambiri mpaka kukhudza.Uku sikumangodzimvera chisoni: Bercovici akunena kuti ngakhale popanda kupukuta, kukhwima kwa lens kopangidwa pogwiritsa ntchito njira ya polima kumakhala kosakwana nanometer imodzi (gawo limodzi mwa biliyoni imodzi ya mita).“Mphamvu za m’chilengedwe zimapanga mikhalidwe yodabwitsa paokha, ndipo ndi ufulu,” iye anatero.Mosiyana ndi izi, magalasi owoneka bwino amapukutidwa mpaka ma nanometer 100, pomwe magalasi amtundu wa NASA James Webb Space Telescope amapukutidwa mpaka ma nanometer 20.
Koma si aliyense amene amakhulupirira kuti njira yokongola iyi idzakhala mpulumutsi wa mabiliyoni a anthu padziko lonse lapansi.Pulofesa Ady Arie wa ku yunivesite ya Tel Aviv School of Electrical Engineering ananena kuti njira ya Bercovici ndi Frumkin imafuna nkhungu yozungulira yomwe imalowetsa polima yamadzimadzi, polima yokha ndi nyali ya ultraviolet.
"Izi sizipezeka m'midzi ya Amwenye," adatero.Nkhani ina yomwe idayambitsidwa ndi SPO Precision Optics woyambitsa komanso wachiwiri kwa purezidenti wa R&D Niv Adut ndi wasayansi wamkulu wa kampaniyo Dr. Doron Sturlesi (onse omwe amadziwa bwino ntchito ya Bercovici) ndikuti m'malo mwa kugaya ndi mapulasitiki apulasitiki kumapangitsa kuti zikhale zovuta kusinthira mandala kuti agwirizane zosowa.Anthu ake.
Berkovic sanachite mantha."Kudzudzula ndi gawo lofunika kwambiri la sayansi, ndipo kukula kwathu kwachangu m'chaka chathachi kudachitika makamaka chifukwa cha akatswiri omwe amatikakamiza kuti tichite," adatero.Ponena za kuthekera kopanga zinthu m’madera akutali, iye anawonjezera kuti: “Njira zopangira magalasi pogwiritsa ntchito njira zachikale ndi zazikulu;mufunika mafakitale, makina, ndi akatswiri, ndipo timangofunikira zida zochepa. ”
Bercovici anatisonyeza nyale ziwiri za ultraviolet mu labotale yake: “Iyi ikuchokera ku Amazon ndipo imadula $4, ina ikuchokera ku AliExpress ndipo imawononga $1.70.Ngati mulibe, mutha kugwiritsa ntchito Sunshine nthawi zonse,” adatero.Nanga ma polima?"Botolo la 250 ml limagulitsidwa $16 pa Amazon.Magalasi apakati amafunikira 5 mpaka 10 ml, motero mtengo wa polima siwofunikanso. ”
Iye anatsindika kuti njira yake sikutanthauza kugwiritsa ntchito nkhungu zapadera pa nambala iliyonse ya lens, monga otsutsa amanenera.Chikombole chosavuta chimakhala choyenera pa nambala iliyonse ya lens, iye anafotokoza kuti: “Kusiyana kwake ndiko kuchuluka kwa jekeseni wa polima, ndipo kupanga silinda ya magalasiwo, chimene chimafunika ndicho kutambasula nkhunguyo pang’ono.”
Bercovici adanena kuti gawo lokhalo lokwera mtengo la ntchitoyi ndi jekeseni wa polima, zomwe ziyenera kuchitidwa ndendende malinga ndi kuchuluka kwa magalasi ofunikira.
"Malato athu ndikuthandizira dziko lino ndi zinthu zochepa kwambiri," adatero Bercovici.Ngakhale magalasi otsika mtengo amatha kubweretsedwa kumidzi osauka - ngakhale izi sizinamalizidwe - ndondomeko yake ndi yaikulu kwambiri.“Monga mwambi wotchuka uja, sindikufuna kuwapatsa nsomba, ndikufuna kuwaphunzitsa kusodza.Mwanjira imeneyi, anthu azitha kupanga magalasi awo,” adatero.“Kodi zitheka?Ndi nthawi yokha yomwe idzapereke yankho. "
Bercovici ndi Frumkin adalongosola izi m'nkhani pafupifupi miyezi isanu ndi umodzi yapitayo mu kope loyamba la Flow, nyuzipepala ya fluid mechanics applications yofalitsidwa ndi yunivesite ya Cambridge.Koma gulu silikufuna kukhalabe pa magalasi osavuta a kuwala.Pepala lina lofalitsidwa m'magazini ya Optica masabata angapo apitawo lidalongosola njira yatsopano yopangira zida zowoneka bwino m'munda wa optics wopanda mawonekedwe.Zigawo zowoneka bwinozi sizikhala zopingasa kapena zopindika, koma zimapangidwira pamalo owoneka bwino, ndipo kuwala kumawunikiridwa kumadera osiyanasiyana kuti akwaniritse zomwe akufuna.Zigawozi zitha kupezeka mu magalasi ambiri, zipewa zoyendetsa ndege, makina opangira ma projekiti apamwamba, makina owoneka bwino ndi augmented real, ndi malo ena.
Kupanga zida zopanda mawonekedwe pogwiritsa ntchito njira zokhazikika ndizovuta komanso zokwera mtengo chifukwa ndizovuta kugaya ndi kupukuta malo awo.Choncho, zigawozi pakali pano zili ndi ntchito zochepa."Pakhala pali zofalitsa zamaphunziro pakugwiritsa ntchito malo oterowo, koma izi sizinawonekere pakugwiritsa ntchito," adatero Bercovici.Mu pepala latsopanoli, gulu la labotale lotsogozedwa ndi Elgarisi lidawonetsa momwe angayang'anire mawonekedwe apamwamba omwe amapangidwa pamene madzi a polima amabayidwa poyang'anira mawonekedwe a chimango.Chojambulacho chikhoza kupangidwa pogwiritsa ntchito chosindikizira cha 3D."Sitichitanso zinthu ndi ndowa ya mop, koma ndizosavuta," adatero Bercovici.
Omer Luria, katswiri wofufuza pa labotale, ananena kuti ukadaulo watsopanowu ukhoza kutulutsa mwachangu magalasi osalala okhala ndi malo apadera."Tikukhulupirira kuti ikhoza kuchepetsa kwambiri mtengo ndi nthawi yopangira zinthu zovuta za kuwala," adatero.
Pulofesa Arie ndi m'modzi mwa akonzi a Optica, koma sanatenge nawo gawo pakuwunikanso nkhaniyi."Iyi ndi ntchito yabwino kwambiri," adatero Ali za kafukufukuyu."Kuti apange mawonekedwe a aspheric optical, njira zamakono zimagwiritsa ntchito nkhungu kapena kusindikiza kwa 3D, koma njira zonsezi ndizovuta kupanga malo osalala komanso aakulu mkati mwa nthawi yokwanira."Arie amakhulupirira kuti njira yatsopanoyi idzathandiza kupanga ufulu Prototype wa zigawo zovomerezeka."Kupanga mafakitale a zigawo zambiri, ndi bwino kukonzekera nkhungu, koma kuti muyese mwamsanga malingaliro atsopano, iyi ndi njira yosangalatsa komanso yokongola," adatero.
SPO ndi amodzi mwamakampani otsogola ku Israeli pantchito zamawonekedwe aulere.Malinga ndi Adut ndi Sturlesi, njira yatsopanoyi ili ndi zabwino ndi zovuta zake.Amati kugwiritsa ntchito mapulasitiki kumachepetsa zotheka chifukwa sichitha kutentha kwambiri komanso kuthekera kwawo kukwaniritsa mtundu wokwanira wamitundu yonse ndikochepa.Ponena za ubwino, iwo adanena kuti lusoli likhoza kuchepetsa kwambiri mtengo wopangira magalasi apulasitiki ovuta, omwe amagwiritsidwa ntchito m'mafoni onse a m'manja.
Adut ndi Sturlesi adawonjezeranso kuti ndi njira zachikhalidwe zopangira, kukula kwa magalasi apulasitiki kumakhala kochepa chifukwa akakula, amakhala osalondola kwambiri.Iwo adanena kuti, molingana ndi njira ya Bercovici, kupanga magalasi amadzimadzi kumatha kulepheretsa kupotoza, komwe kumatha kupanga zida zamphamvu kwambiri zowoneka bwino-kaya m'munda wa magalasi ozungulira kapena magalasi aulere.
Ntchito yosayembekezereka kwambiri ya gulu la Technion inali kusankha kupanga lens lalikulu.Apa, zonse zidayamba ndi kukambirana mwangozi komanso funso lopanda pake."Zonse ndi za anthu," adatero Berkovic.Pamene adafunsa Berkovic, adauza Dr. Edward Baraban, wasayansi wofufuza za NASA, kuti amadziwa ntchito yake ku yunivesite ya Stanford, ndipo amamudziwa ku yunivesite ya Stanford: "Mukuganiza kuti mungathe kupanga lens yotereyi ya telescope yamlengalenga. ?”
Berkovic anakumbukira kuti: “Zinamveka ngati maganizo openga, koma zinakhazikika m’maganizo mwanga.”Mayeso a labotale atamalizidwa bwino, ofufuza aku Israeli adazindikira kuti njirayo ingagwiritsidwe ntchito mu Imagwira ntchito mofananamo mumlengalenga.Kupatula apo, mutha kukwaniritsa mikhalidwe ya microgravity kumeneko popanda kufunikira kwa zakumwa zoziziritsa kukhosi."Ndinamuimbira Edward ndikumuuza, zikuyenda!"
Ma telescope akumlengalenga ali ndi maubwino ambiri kuposa ma telesikopu oyambira pansi chifukwa sakhudzidwa ndi kuipitsidwa kwa mumlengalenga kapena kuwala.Vuto lalikulu kwambiri pakupanga makina oonera zakuthambo n’lakuti kukula kwake n’kochepa chifukwa cha kukula kwa choulutsira.Padziko lapansi, ma telescopes pakadali pano ali ndi mainchesi mpaka 40 metres.Hubble Space Telescope ili ndi galasi lokhala ndi mainchesi a mita 2.4, pomwe James Webb Telescope ili ndi galasi lofikira mita 6.5 - zidatengera asayansi zaka 25 kuti akwaniritse izi, zomwe zimawononga madola 9 biliyoni aku US, mwina chifukwa A system ikufunika yopangidwa yomwe imatha kuyambitsa telesikopu pamalo opindika ndiyeno imatsegula yokha mumlengalenga.
Kumbali inayi, Liquid ali kale "opindika".Mwachitsanzo, mutha kudzaza chopatsira ndi chitsulo chamadzimadzi, kuwonjezera makina ojambulira ndi mphete yokulitsa, kenako kupanga galasi mumlengalenga."Izi ndi bodza," adavomereza Berkovic.“Amayi anandifunsa kuti, ‘Kodi ukhala wokonzeka liti?Ndinamuuza kuti, ‘Mwina m’zaka pafupifupi 20.Anati alibe nthawi yodikira.
Ngati malotowa akwaniritsidwa, angasinthe tsogolo la kafukufuku wamlengalenga.Masiku ano, Berkovic ananena kuti anthu alibe mphamvu kuona mwachindunji exoplanets-mapulaneti kunja kwa dongosolo dzuwa, chifukwa kuchita zimenezi kumafuna Earth telescope nthawi 10 lalikulu kuposa zinthu zoonera patali-omwe ndi zosatheka kwathunthu ndi luso alipo.
Kumbali ina, Bercovici adawonjezeranso kuti Falcon Heavy, yomwe pakadali pano ndi SpaceX yayikulu kwambiri, imatha kunyamula madzi okwana ma kiyubiki 20.Iye anafotokoza kuti mwalingaliro, Falcon Heavy ingagwiritsiridwe ntchito kuulutsira madzi kumalo ozungulira, kumene madziwo angagwiritsidwe ntchito kupanga galasi la m’mimba mwake wa mamita 75—malo a pamwamba ndi kuunika kosonkhanitsidwa kukakhala kwakukulu kuŵirikiza nthaŵi 100 kuposa chotsiriziracho. .James Webb telescope.
Izi ndi maloto, ndipo zidzatenga nthawi yaitali kuti zitheke.Koma NASA ikuzitenga mozama.Pamodzi ndi gulu la akatswiri ndi asayansi ochokera ku NASA Ames Research Center, motsogoleredwa ndi Balaban, lusoli likuyesedwa kwa nthawi yoyamba.
Kumapeto kwa Disembala, kachitidwe kopangidwa ndi gulu la labotale ya Bercovici idzatumizidwa ku International Space Station, komwe kudzachitika zoyeserera zingapo kuti azitha kupanga ndi kuchiritsa magalasi mumlengalenga.Izi zisanachitike, kuyesa kudzachitika ku Florida kumapeto kwa sabata ino kuyesa kuthekera kopanga magalasi apamwamba kwambiri pansi pa microgravity popanda kufunikira kwamadzi aliwonse amadzimadzi.
The Fluid Telescope Experiment (FLUTE) idachitika pa ndege yamphamvu yokoka-mipando yonse ya ndegeyi idachotsedwa kuti iphunzitse akatswiri a zakuthambo ndi kuwombera zithunzi za zero-gravity m'mafilimu.Poyendetsa mu mawonekedwe a antiparabola-kukwera ndiyeno kugwa momasuka-microgravity zinthu analengedwa mu ndege kwa nthawi yochepa."Amatchedwa 'smit comet' pazifukwa zomveka," adatero Berkovic ndikumwetulira.Kugwa kwaulere kumatenga pafupifupi masekondi 20, momwe mphamvu yokoka ya ndegeyo ili pafupi ndi ziro.Panthawiyi, ochita kafukufuku adzayesa kupanga lens yamadzimadzi ndikupanga miyeso kuti atsimikizire kuti khalidwe la lens ndilokwanira, ndiye ndege imakhala yowongoka, mphamvu yokoka imabwezeretsedwa bwino, ndipo lens imakhala matope.
Kuyeserako kukukonzekera maulendo awiri pa Lachinayi ndi Lachisanu, aliyense ali ndi 30 parabolas.Bercovici ndi mamembala ambiri a gulu la labotale, kuphatikiza Elgarisi ndi Luria, ndi Frumkin waku Massachusetts Institute of Technology adzakhalapo.
Paulendo wanga ku labotale ya Technion, chisangalalo chinali chachikulu.Pali makatoni 60 pansi, omwe ali ndi zida 60 zodzipangira tokha zoyesera.Luria akupanga kusintha komaliza komanso komaliza kwa makina oyesera a makompyuta omwe adapanga kuti ayeze momwe magalasi amagwirira ntchito.
Nthawi yomweyo, gulu likuchita masewera olimbitsa thupi nthawi isanakwane.Gulu lina linayima pamenepo ndi choyimitsa wotchi, ndipo enawo anali ndi masekondi 20 kuti awombe.Pa ndege yokha, mikhalidwe idzakhala yoipitsitsa, makamaka pambuyo pa kugwa kwaulere kangapo ndi kukweza mmwamba pansi pa mphamvu yokoka.
Si gulu la Technion lokha lomwe likusangalala.Baraban, wofufuza wamkulu wa NASA's Flute Experiment, adauza Haaretz, "Njira yopangira madzimadzi imatha kupangitsa kuti pakhale ma telescope amphamvu amlengalenga okhala ndi malo ofikira makumi kapena mazana a mita.Mwachitsanzo, ma telesikopu oterowo amatha kuona mwachindunji malo a nyenyezi zina.Planet, imathandizira kusanthula kwapamwamba kwa mlengalenga wake, ndipo imatha kuzindikira mawonekedwe apamwamba kwambiri.Njira imeneyi ingayambitsenso kugwiritsa ntchito malo ena, monga zida zapamwamba kwambiri zotungira ndi kutumiza mphamvu, zida zasayansi, ndi zida zachipatala zopanga Space, motero zimathandizira kwambiri pakukula kwachuma.
Atangotsala pang'ono kukwera ndege ndikuyamba ulendo wa moyo wake, Berkovic anaima kwa kanthawi modabwa.Iye anati: “Ndimadzifunsabe chifukwa chake palibe amene ankaganizirapo zimenezi.“Nthaŵi zonse ndikapita kumsonkhano, ndimaopa kuti wina angaime n’kunena kuti ofufuza ena a ku Russia anachita zimenezi zaka 60 zapitazo.Kupatula apo, iyi ndi njira yosavuta. ”
Nthawi yotumiza: Dec-21-2021