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[Venkat @89]

I have been trying to understand the concept of specific heat ratios. From what I gather, the ratio is defined as the quotient of the Specific heat at constant pressure and the Specific heat ratio at constant volume.

Could anybody give me an insight into what leads to gases having different specific heats when under constant pressure or constant volume. I'm guessing it's to do with the difference in particle interactions when at constant volume and at constant pressure, but how exactly?

And does the ratio of specific heat have any physical meaning attached to it? If so, how would you define the ratio other than in a mathematical way. 

 

Let me please understand it conceptually rather than as an mathematical equation.