Understanding Voltage, Resistance, and Power in a Polyimide Heater Circuit

https://polyimide-heater-guide.keystonescope.com/posts/how-etched-foil-construction-works-in-a-mica-heater

In precision electronics, a polyimide heater must deliver heat in a controlled way. It uses a patterned resistive foil circuit insulated by polyimide film. One useful trait is custom shapes. Still, excess watt density can change the result