Bottle caps par ye choti choti lines kyun bani hoti hain? 🤔🥤

Kya aapne kabhi socha hai ki cold drink ya water bottle ke cap par choti choti lines kyun hoti hain? 🧴
Inhe “ridges” kaha jata hai, aur inka kaam hota hai grip dena taki bottle easily khul sake. Ye lines friction badhati hain aur cap ko slippery hone se bachati hain.
Iss video mein aap jaanenge bottle cap design ke peeche ka interesting science aur engineering secret! 🔍
Aise hi amazing facts aur daily life secrets ke liye channel ko subscribe karein 🔔
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Видео Bottle caps par ye choti choti lines kyun bani hoti hain? 🤔🥤 канала Unreal Happenings