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1. Which one of the following provides the action-stopping capability of high-speed flash photography?

the camera
the flash unit
the sound trigger
the film

2. Describe two functions of a silicon-controlled rectifier when used with a sound trigger.

3. When using a sound trigger to photograph a balloon burst, how can the time delay between the initiation of the burst and the detection of the sound by the microphone be adjusted?

4. For high-speed flash photography, why is the flash unit used separate from the camera?

5. When you remove the light sensor from the front of the 283 and replace it with a wire or paper clip, you get the shortest flash duration as a result of the resistance of the wire being nearly 0.  When you have the light sensor in place on the yellow setting, the amount of reflected light reaching the sensor in a particular time is maximized, because the filter over the light sensor is transparent. What is it about the way the sensor responds to light that makes the sensor have the same effect on flash duration as the paper clip?

6. Describe the technique of photographing a balloon burst using a sound trigger, flash unit, and camera.