(Download) "Why Does Ice Float on the Surface of Water?(Essay)" by Islam & Science # Book PDF Kindle ePub Free
eBook details
- Title: Why Does Ice Float on the Surface of Water?(Essay)
- Author : Islam & Science
- Release Date : January 22, 2009
- Genre: Religion & Spirituality,Books,
- Pages : * pages
- Size : 165 KB
Description
The regular mail pouch that went with the caravan from KhwArazm to Bukhara on a certain spring day had a letter from AbC RayhAn al-Biruni for Ibn Sina. The letter continued their discussion from where it was left in the previous letter, but this time al-BirCni asked two additional questions: (i) If things expand on heating and contract on cooling, then why does a sealed flask full of water break upon freezing? (ii) Why does ice float on the surface of water although it is closer to earthly nature in its accumulation of cold and in its concrete solidity? "The answer to your first question is already present in the question itself," responded Ibn SinA in a letter carried by the returning caravan. "When the body contracts upon cooling, it takes less space; this creates a vacuum inside the flask and that breaks it. As for your second question: water preserves its airy qualities while freezing, and these prevent it from sinking."
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