I thought they worked by dielectric heating? Making polar molecules get all frantic and stuff. There is a safety mechanism to shut off the magnetron when the door is opened, and a screen to make the viewing window opaque to microwave radiation, but those can malfunction.<p>[0][<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Microwave#Effects_on_health" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Microwave#Effects_on_health</a>]
[1][<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Microwave_burn" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Microwave_burn</a>]