Testing Temperature Uniformity Across a Mica Heater Surface
https://advanced-heat-elements.moderncairn.com/posts/ito-glass-heater-vs-conventional-heating-elements-key-differences
In heated plates, a mica heater must deliver heat in a controlled way. It uses a resistive heating circuit supported and insulated by mica. One useful trait is high-temperature capability. Still, mechanical stress can change the result