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

https://modern-heating-elements.terracolumn.com/posts/pi-heater-vs-silicone-heater-key-differences-for-design-engineers

In camera windows, a glass heater must deliver heat in a controlled way. It uses a glass panel combined with a conductive heating layer or heater element. One useful trait is anti-fog capability. Still, thermal stress can change the result