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DINESH VISHWAKARMA

UP Board 10th Class 2021 (For Hindi Medium Students)
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3 years ago

गर्मियों में खिड़कियों के कांच नीचे मोटे और ऊपर पतले क्यों हो जाते हैं?

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SUNDARAM SINGH

3 years ago

. Due to heating during the day and cooling at night, i.e., annealing over a number of years, glass acquires some crystalline character. <br> b. Glass is not a true solid but a super cooling liquid of high viscosity (called pseudosolid). Therefore, it has the property to flow

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