Page 271 - Chapter 3 - Laser/IPL Hair Removal
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Chapter 3 – Fundamentals of Laser/IPL Hair Removal 2nd Edition
The thermal diffusivity for meat is around 0.15 mm2/s. We can calculate the time it takes for the heat wave to reach the midpoint (5 mm into the beef) by applying the equation above.
t=5*(5/0.15)s = 167seconds
which is 2 minutes, 47 seconds. If you now turn the beef you have to fry it for another 2 mins, 47s to get it well done.
(If you don't turn the beef the total frying time would be 10 * (10/0.15) = 667 seconds which is more than 11 minutes instead of 5-6 minutes!)
________________________________________________________________________ 271 Chapter 3, Ed. 2.0 Laser/IPL Hair Removal
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