Ask the students to discuss what they saw. Increase the rate of the strobe, and repeat the dropping of the golf ball. Discuss the differences with the students between the first drop and this one, comparing what the students actually observed. Repeat this several times, each time increasing the rate of flash. Discuss the results with the class.
Extensions Do a report on the history of strobe photography.
A comparison to time-lapse photography could be incorporated into this research. Turn on a faucet to a slow drizzle. Place the strobe to illuminate the stream. By adjusting the flash rate, students will be able to observe the individual drops of water coming out of the faucet. Discuss video capture and research.