Microwave analogy of the light pipe using flexible metal tubing.

Microwave analogy of the light pipe using flexible metal tubing. A microwave transmitter beams 3 cm microwaves down a flexible metal pipe designed to show the propagation of microwaves in a bent hollow conductor. Microwaves are detected at the 3 cm microwave receiver horn, even though the metal pipe is angled in many directions, simulating a microwave analogy of the light pipe shown in X and X.