Fluidics have actually found useful applications at extreme temperatures. Fluidic capillary pyrometers have been used to measure the temperature of molten steel

Fluidics have actually found useful applications at extreme temperatures. Fluidic capillary pyrometers have been used to measure the temperature of molten steel and here is an image of a fluidic afterburner fuel control operating at temperature's so hot it's glowing[0] [0]https://imgur.com/uwPSpR5 https://imgur.com/uwPSpR5 from Fluidics Quarterly Volume 4 Number 2, page 54