USE IN HIGH-SPEED PHOTOGRAPHY.

Figure 2-3. Vibration test, using a stroboscope

and a Type 1539 Stroboslave.

2-11 . USE IN HIGH-SPEED PHOTOGRAPHY.

The short duration of the light flash from a Type 1531 Strobotac,

triggered by a controlled time -delay pulse from the Type 1532-P2 Flash

Delay, allows the photographer to capture on the film the image of very

fast moving objects (see Figure 2-4). The instrument can be triggered

Figure 2-4. Stroboscope, Flash Delay, and Photoelec-

tric Pickoff used for high-speed photography.