Editing Stroboscope (section)

== Demonstration ==

''*NOTE*: Ask the contact or the audience before presenting this demonstration if anyone in attendance is prone to epileptic seizures. If so, they should leave the room before this demonstration, and have a co-presenter go with them to talk about the demonstration using the [[Temporal Tops]] demonstration.''

;Preparation:
Loosen the screws holding the brass washer/mount, and remove it from the front of the stroboscope. Remove the front aluminum disc. Place your desired stroboscope disc on the rear aluminum disc, and return the front disc to hold it in place. Slide the brass washer/mount back on, and push it tightly against the other discs as you tighten the screws into place. Plug in the strobe light to the back of the stroboscope, then plug in the stroboscope itself.
;Presentation:
# Point to the disc and ask the audience to identify the image you are using (Gears, Beach Ball, Dots, Spiral, Pistons, Red/Green/Blue Boxes)
# Spin the disc with your hand, and explain how our eyes have a "speed limit", or a limit to the number of images, or ''frames'', our eyes can capture per second (about 60 fps)
# Turn on the stroboscope, and point out the blur we now see instead of an image. Ask the audience what they might see when we turn on the strobe light.
# Hold the strobe light and turn it on at the low flash rate, keeping it aimed at the spinning wheel. Slowly adjust the flash rate until you get a still image on the wheel. Explain how the strobe light is "setting the speed limit" for our eyes and giving us a certain number of frames per second.
# Adjust the flash rate until you have a dynamic image; Picture discs are "moving" or the color wheel starts blending colors. Ask for answers on why the images are moving.
# Adjust to a high flash rate, so you have a rapid dynamic image; picture discs are moving extremely fast, color wheel has a variety of colors on it. Explain the effect they are seeing.
# Turn the strobe light down to the lowest flash rate, then turn it off. Turn off the stroboscope. As it slows down, and if time permits, you can pick out a second wheel to show them!