Microwave ovens normally have a glass door with an imbedded

Microwave ovens normally have a glass door with an imbedded conducting mesh so that the interior may be seen through the door. Discuss the rationale for including a conducting mesh in the window and explain how large the mesh size can be to safely ensure that microwaves remain primarily interior to the oven.

Solution

The conducting mesh imbedded on microwave oven door functions same as Faraday\'s cage(In Faraday\'s cage waves are confined inside the cage itself without exposing it to outside). This conducting mesh design is such that it\'s holes size is at max half of the wavelength of microwaves that we are dealing in the Concept of microwave ovens.