MANFRED KAGE / SCIENCE PHOTO LIBRARY. MANFRED KAGE / SCIENCE PHOTO LIBRARY.
Macrophotograph of the heat sensor found in a Braun electric hair dryer: the cylindrical device switches off the current to the heating elements (the U-shaped wires in the background) when the temperature has reached its preset working level. Magnification: X2.5 (6x7).
Model release not required. Property release not required.