How do you think this awesome light installation achieved this effect? Answered
So I'm recounting this from memory. I was in Argentina several years ago in a nightclub and there were these bars of light on the wall. I can't remember exactly what they looked like but it was a vertical bar of light, maybe 3 feet tall, very thin. When one whipped their head back and forth while dancing, a full size image outline (appearing 4 feet wide) of in this case the Camel cigarette logo would whip out in the direction of your rotation. So basically this full width image was stored in a tiny space, and when you rapidly rotated your head, the full image would emerge in the direction of your rotation. You went left, the camel would emerge following the bar (on the right) and it would face the left, whereas if you went right, the camel of course emerges following the bar on the left and it would face right.