An item showing microwave and radar development at Malvern, Worcestershire.
Microwaves - radar development.
C/U of a light bulb, a man holds it near the microwave conductor and it lights up, M/S of couple watching. Various shots as he repeats this with other bulbs. M/S as he adjusts the big radar machine. M/S glowing light bulb. M/S as metal glows white hot when held against the conductor.