Evaporation kin cheezon pe depend karta hai?

Kisi din paani jaldi kyun sookhta hai?

Garam, dhoop wale din geele kapde jaldi sookh jaate hain aur baarish ke mausam mein bahut dheere. Pankha chalu ho to geela farsh jaldi sookhta hai. Hawa wale din paseena jaldi sookhta hai. Ye roz ke ishaare batate hain ki kuch cheezein paani ko tez ya dheere evaporate karti hain. Chalo, inhe ek-ek karke test karte hain.

1. Exposed area

Barabar paani ek chhote bottle ke dhakkan mein aur ek plate pe lo, aur dono ko paas-paas rakho. Plate wala paani pehle sookhta hai.

Plate pe paani phaila hua hai, isliye uski badi sateh hawa ke sampark mein hai. Is khuli sateh ko exposed area kehte hain. Evaporation sateh se hota hai, isliye bada exposed area har minute zyada paani ko nikalne deta hai. Isi wajah se hum geele kapdon ka dher nahi lagaate, unhe phaila ke daalte hain.

2. Dhoop

Do ek jaise bottle ke dhakkanon mein barabar paani daalo. Ek ko dhoop mein aur doosre ko chhaon mein rakho, aur har 15 minute mein dekho. Dhoop wala paani pehle sookhta hai. Garam paani tez evaporate hota hai, isliye garam, dhoop wale din kapde jaldi sookhte hain.

3. Chalti hawa

Hawa wale din kapde jaldi sookhte hain, aur pankhe ke neeche geela farsh jaldi sookhta hai. Geeli sateh se evaporate hota paani uske theek upar ki hawa ko nami wala bana deta hai. Chalti hawa us nami wali hawa ko door le jaati hai aur sookhi hawa le aati hai, isliye evaporation tezi se chalta rehta hai.

4. Humidity

Baarish wale din hawa mein pehle se bahut water vapour hoti hai: hawa humid hoti hai. Jo hawa pehle se vapour se bhari ho, usme paani dheere evaporate hota hai, isliye kapde sookhne mein bahut time lagta hai. Aise din kapde jaldi sukhaane ke liye unhe achhe se phaila ke aisi jagah taango jahan hawa chale, jaise pankhe ke neeche.

Fair test kaise karte hain?

Har test mein sirf ek cheez badlo aur baaki sab same rakho. Warna pata nahi chalega ki kis badlaav se fark pada.

Same rakha	Badla	Naapa
Paani ki maatra, jagah, shuru ka time	Exposed area (bottle ka dhakkan ya plate)	Paani poora sookhne ka time
Paani ki maatra, ek jaise dhakkan	Dhoop ya chhaon	Paani poora sookhne ka time

Apna test bhi try karo, jaise pankha chalu aur ruki hawa ka muqabla.

Evaporation se thandak kyun milti hai?

Evaporate hone ke liye paani ko garmi chahiye, aur wo ye garmi us sateh se leta hai jis pe wo hai. Isliye evaporation se thandak (cooling effect) milti hai.

• Matka (mitti ka ghada). Paani mitti ke chhote-chhote chhedon se dheere-dheere rishta hai aur ghade ke bahar se evaporate hota hai. Isse ghade aur andar ke paani se garmi nikal jaati hai, aur paani thanda rehta hai. Steel ke bartan mein chhed nahi hote, isliye uska paani is tarah thanda nahi hota. Surahi bhi aise hi kaam karti hai.
• Paseena aur pankha. Chalti hawa paseene ko evaporate hone mein madad karti hai, aur evaporation hamari skin se garmi leta hai. Isliye pankhe ke neeche thandak lagti hai.
• Garam chhat pe paani. Garmi mein farsh ya chhat pe paani chhidakne se, paani ke evaporate hote hi wo thandi hoti hai.
• Sanitiser. Sanitiser haath pe ragadne se thandak lagti hai, kyunki wo jaldi evaporate hota hai.

Pot-in-pot cooler banao

Do alag size ke mitti ke ghade aur thodi ret chahiye. Bade ghade ki tali mein ret ki parat bichhao, chhota ghada beech mein rakho, aur dono ke beech ki jagah aur ret se bhar do. Ret mein paani daalo aur chhote ghade ko dhakkan ya geeli jute ki bori se dhak do. Lagbhag 4–5 ghante mein andar thandak ho jaati hai. Isme phal ya sabziyan rakho, ret ko geela rakhne ke liye paani daalte raho, aur roz dekho ki wo kitne din taaza rehti hain.