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 Post subject: Incident Energy
PostPosted: Fri Feb 27, 2009 9:34 am 
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Joined: Tue Feb 17, 2009 11:04 am
Posts: 36
We express available incident energy in calories/square-cm. I'm a bit
confused about the square-cm. I know how to convert watt-seconds to
joules to calories of heat. How does the square-cm factor into the
equation?


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PostPosted: Fri Feb 27, 2009 9:47 am 
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Joined: Mon Jun 02, 2008 11:58 am
Posts: 1103
Location: Charlotte, NC
Vica1ME wrote:
We express available incident energy in calories/square-cm. I'm a bit
confused about the square-cm. I know how to convert watt-seconds to
joules to calories of heat. How does the square-cm factor into the
equation?


Think of Watt-seconds as energy released, when you talk about J or Cal/cm2 it is refering to that heat on a recieving surface, so to measure that you need to define the area of the recieving surface.


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