High-Speed Imaging Workshop

for Fall 2012 meeting of the NCS-AAPT at High Point University

Abstract

These materials may be used for non-commercial, educational purposes. All other uses require permission. Contact winters@hiviz.com.

Sound trigger assembly info

Making a sound trigger using a tape recorder

Using a FunSaver camera as a low-cost flash unit

Make your own trigger circuits

Measuring small time intervals

Flashing light detector discs: Use these to display the strobe effect from the 120 Hz intensity oscillations of AC light sources. Black lights and neon lights show the greatest effect. Older fluorescents also show a strong effect, including color separation of the mercury and phosphor emissions, which peak in different parts of the cycle. Newer fluorescents, operating at higher frequency and with a greater variety of phosphors, show a much weaker effect. Intensity variations for incandescent sources are weak but visible. Wooden blanks were available at the workshop. Hot glue a marble to one side of the disc for a bearing and a 1-inch length of wooden dowel (or pencil stub) to the other side for a handle. Patterns can be printed from the files below.

Split playing card photo references

Projectile photos

Racquetball photos

Labs and activities

More resources

Trevor's Tips for High-Speed Photography with a P&S Digital Camera

More trigger circuits for flash and basic how-to

Collection of activities in high-speed photography

High-intensity LED strobe (by Patrick Wong)

Microcontroller-based portable intervalometer (by Alex Hornstein)

Optical Toys (in particular, see phenakistoscope)