I-physics

Isihloko mayelana ne-Equation of ukukhulisa ingilazi ukukhulisa ingilazi

Njengoba kuchaziwe esihlokweni esithi i-loupe (ingilazi yokukhulisa), into ibonakala incane uma ibukwa kude futhi ibukeka kahle uma ibukwa eduze. Umehluko ngobukhulu bento ebonwa yiso ubangelwa umehluko ekhoneni eliphakathi kweso nento. Uma into ikude kakhulu neso, i-engeli ephakathi kweso nento incane kangangokuthi isithombe esakhiwe ku-retina yeso naso sincane. Ngokuphambene nalokho, uma into iseduze neso, i-engeli ephakathi kweso nento inkulu kangangokuthi isithombe esakhiwe ku-retina yeso naso sibaluleke kakhulu. Lapho isondelene neso, i-engeli ephakathi kweso nento iphakeme, ukuze isithombe esakhiwe ku-retina naso sikhule. Sicela uqaphele ukuthi iso lomuntu elijwayelekile linephuzu eliseduze lingu-25 cm ukuze ibanga eliphakathi kweso nento lingabi ngaphansi kuka-25 cm. Kungaphethwa ngokuthi i-engeli phakathi kweso elivamile lomuntu ojwayelekile nento iphezulu lapho ibanga eliphakathi kweso nento lingu-25 cm.

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Incazelo yengilazi yokukhulisa iLoupe

I-loupe noma ingilazi yokukhulisa iyilensi eqondile esetshenziswa ukusiza iso ukubona into okunzima ukuyibona ngqo usebenzisa iso. I-loupe ibizwa ngokuthi i-simple magnifier ngoba inekhono elilinganiselwe lokukhulisa isithombe sento. Esifundweni esilandelayo, uzofunda ngezikhulisi ezingezona ezilula njenge-microscope, njll.

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Isihloko mayelana nama-contact lens Ukubona kude Ukubona eduze

Amehlo angaboni kahle angalungiswa kusetshenziswa amalensi ezibuko zamehlo kanye namalensi okuxhumana. Amalensi ezibuko zamehlo anamathele engilazini, kuyilapho amalensi okuxhumana enamathele enhlamvini yeso. Ingilazi inebanga elithile ukusuka esweni, kuyilapho amalensi okuxhumana enamathela esweni ukuze ibanga eliphakathi kwelensi yokuxhumana neso linganakwa.

Isibonelo sezinkinga umuntu onenkinga yokubona eduze nokubona kude abhekana nazo siyachazwa, ukuthi yiziphi izinhlobo zamalensi asetshenziswayo ukulungisa amehlo, ukuthi ubude obuqondile namandla elensi buyini. Lokhu kugxile ekusetshenzisweni kwamalensi okuxhumana ekwenzeni ukubona eduze nokubona kude kube sesimweni esijwayelekile.

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Isihloko mayelana nokubona kude kwe-Eyeglass Ukubona eduze

Ukubona eduze kungalungiswa ngokusebenzisa amalensi ezibuko zamehlo kanye namalensi okuxhumana . Amalensi ezibuko zamehlo anamathele engilazini, kuyilapho amalensi okuxhumana enamathele enhlamvini yeso. Ingilazi inebanga elithile ukusuka esweni kuyilapho amalensi okuxhumana enamathela esweni ukuze ibanga eliphakathi kwelensi yokuxhumana neso linganakwa.

Kuleli phepha, sichaza izibonelo zezinkinga ezibhekene nabantu abanenkinga yokubona eduze nokubona kude, uhlobo lwelensi esetshenziswa ukulungisa iso, kanye nobude be-focus kanye namandla elensi. Lokhu kugxile ekusetshenzisweni kwezibuko ukulungisa ukubona eduze nokubona kude.

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Incazelo yeso lokubona izindlebe n

Ukubona eduze noma i-hyperopia yisimo esingavamile samehlo lapho iso lingakwazi ukubona indawo eseduze noma indawo eseduze ibonakala ifiphele. Umuntu ojwayelekile onamehlo ajwayelekile unendawo eseduze engama-25 cm.

Imbangela yokungaboni kahle kwamehlo

Ngokusekelwe encazelweni yangaphambilini, kungaphethwa ngokuthi imbangela yokubona kude yi-cornea kanti ilensi yeso ayigobile kangako,

ukuze ubude bokugxila besistimu yelensi ye-cornea-eye bubaluleke kakhulu, okubangela ukuthi ukukhanya okuvela endaweni eseduze kugxile ngemuva kwe-retina.

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Incazelo yeso elibona kude

Ukubona eduze noma i-hyperopia yisimo esingavamile samehlo lapho iso lingakwazi ukubona kahle iphuzu eliseduze, noma iphuzu eliseduze libonakala lifiphele. Nakuba kunzima ukubona iphuzu eliseduze, abantu abanokubona eduze bangabona iphuzu elikude. Iphuzu eliseduze yibanga eliseduze kakhulu elingabonwa yiso elivamile. Iso elijwayelekile elijwayelekile linephuzu eliseduze nama-25 cm. Iphuzu elikude yibanga elikude kakhulu elingabonwa ngamehlo avamile. Umuntu ojwayelekile onephuzu elivamile unephuzu elingenamkhawulo. I-Infinite igama elisetshenziselwa ukuchaza ubude bento ekude kakhulu.

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I-athikili Izinsimbi zokubona iso lomuntu

Izingxenye zeso

I-cornea iyi-membrane ecacile neqinile emboze ingaphambili leso. I-cornea iguqula ukukhanya okungena esweni.

Impunzi iyingxenye emnyama yeso. Impunzi imnyama, ngakho-ke imunca cishe konke ukukhanya. Impunzi iyimbobo lapho ukukhanya kudlula khona esweni. Uma ububanzi bompunzi bukhulu, ukukhanya okuningi kungena esweni futhi uma ubukhulu bompunzi buncane, ukukhanya okuncane kungena esweni.

I-iris ilawula ubukhulu be-pupil. Uma indawo ezungeze iso ikhanya kakhulu, i-iris inciphisa i-pupil. Ngokuphambene nalokho, lapho indawo ezungeze amehlo ingakhanyi kangako, i-iris ikhulisa i-pupil ukuze inani lokukhanya elingena esweni libe likhulu. Uma uke wabona umehluko phakathi kweso lekati emini nasebusuku, khona-ke ungaqonda kalula umsebenzi we-iris.

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Ibanga lento lincane kunobude bokugxila belensi eqondile (do < f)

Ngokusekelwe ekubalweni kokwakheka kwesithombe ngelensi eqondile , kungaphethwa ngokuthi ibanga lento (do) lincane kunobude obuqondile (f) belensi eqondile, izakhiwo zesithombe yilezi:

– Okubonakalayo kusho ukuthi ukukhanya akudluli esithombeni

– Okuqondile

– Uma into ikude kakhulu nelensi eqondile, kulapho usayizi wesithombe uba mkhulu khona

– Uma into ikude kakhulu nelensi eqondile, isithombe siqhele kakhulu kunelensi eqondile.

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Isihloko mayelana ne-Equation yamalensi ahlanganayo (convex)

Ngaphambi kokufunda i-equation yelensi eqondile, qonda imithetho yezimpawu zelensi eqondile ngezansi.

Imithetho yesibonakaliso selensi eqondile

– Ibanga lento (do)

Uma into idlula emsebeni wokukhanya, khona-ke ibanga lento lihle.

– Ibanga lesithombe (di)

Uma umsebe wokukhanya udlula isithombe, khona-ke ibanga lesithombe lihle (isithombe sangempela). Uma umsebe wokukhanya ungadluli esithombeni, ibanga lesithombe lihle (isithombe esibonakalayo).

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Isihloko mayelana nokwakheka kwesithombe ngelensi ehlanganayo (eqondile)

Ukuze uqonde ukwakheka kwesithombe ngelensi eqondile, funda izibonelo zezinkinga nezixazululo ngezansi. Kulesi simo, into ithathwa njengebanga elithile ukusuka kulensi eqondile,

bese udweba ukwakheka kwesithombe ngelensi eqondile, ibanga lesithombe ukusuka kulensi eqondile kanye nokukhulisa isithombe ngelensi eqondile.

Ilensi eqondile inobude obuqondile obungu-20 cm. Izinto ezinobude obungu-10 cm zitholakala ngakwesobunxele selensi. Nquma ibanga lesithombe, ukukhuliswa kwesithombe kanye nokuphakama kwesithombe, uma:

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