पूर्ण आन्तरिक परावर्तन
thumb|250px|poorn antarik paravartan poorn antarik paravartan (aangrezi: Total Internal Reflection) ek prakashiy parighatana hai.
prakash hamesha hi ek madhyam se prakashiy roop se saghan madhyam mean ja sakata hai, lekin yah viral madhyam mean hamesha nahian ja sakata. jab prakash kiranean saghan madhyam se viral madhyam ke prishth par apatit ho rahi hoan aur apatan kon kraantik kon se adhik ho, tab prakash ka apavartan nahian hota, balki sanpoorn prakash paravartit hokar usi madhyam mean laut jata hai. is ghatana ko 'poorn antarik paravartan' kahate haian.
poorn antarik paravartan ka ek upayogi prayog aauptikal phaibar mean kiya jata hai. prakashiy tantuoan ka kary poorn antarik paravartan ke siddhant par hi adharit hai.
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tika tippani aur sandarbh
sanbandhit lekh
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