How to convert J/m² to mW/cm²

Questions and answers on how to convert things from one unit or system to another


How to convert J/m² to mW/cm²

Postby Cédric » Fri Aug 26, 2005 8:01 pm

For a UV cleaning device design I need to know how to convert J/m² to mW/cm².


Postby Guest » Fri Aug 26, 2005 8:50 pm

You can't quite do that as watts are power and joules are energy. A joule is a watt*second.

1 mW/cm^2 = 1 x 10^(-3) W/ 1 x 10^(-4) m^2 = 10 W/m^2

You will then have to look at how many seconds of exposure to get to J/m^2.

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