Photograph of microwave tunneling

microwave transmitter & receiver, styrene pellets, polystyrene hollow prisms (right-angled triangle, 2), goniometer.

with proper alignment, the first of the 2 prisms filled with styrene pellets will block all of the transmitted microwaves from the receiver. Upon placing the second prism in the path at an optimal distance from the first, microwaves are once more detected.

PIRA 7A50.20