It's my understanding that the holes are there merely to be able to see in. Microwave ovens work in the 2.4GHz range, whose waves are a good deal longer than visible light waves. So, if the holes are small enough to keep the 2.4GHz waves contained, but large enough to allow visible light through, then they do their job correctly. At 01:14 PM 1/28/2014, Dan Asimov wrote:
OK, just one question: Does the basic design of a microwave oven require that the interior have holes in it? Those holes make it inevitable that as time marches on the oven starts to stink.
--Dan
On 2014-01-28, at 12:43 PM, Tom Knight wrote:
No excuses for the user interfaces. For the inner surfaces, however, Im pretty sure they are intended to randomize the distribution of reflected internal radiation, which would, with smooth surfaces, likely bounce in very predictable ways, leading to local hot spots and cold spots.