We're all too familiar with the changing nature of traffic lights. Here, I've provided a video of a miniature traffic light going through its motions.
A miniature version displays the three colours of a regular traffic light - red, amber and green.
At the magician's command, the lights change colour a number of times before it finally reverts to its original state.
This is a clever updated version of a standard effect that's been around for well over 80 years. There are adaptations of the original still in existence today, which illustrates the resilience of this effect.
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