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Tripping the Light Fantastic

Bureau of Lost Culture

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The Overhead Projector

There's a difference between UK light shows and American light shows. They were called sort of liquid shows or wet shows sometimes. People got two clock faces and submerged ink and oil in between the two and squashed it together to project that from over-hove projectors. Later on, these wheels came out with pictures, liquids and more A effects. That was a bit more into the seventies now. And they started sticking prisms and kaleidoscopes in front of projection lenses to divide up and move around the image. So you're getting say two pieces of glass, for instance, right? And you're injecting different liquids in between them. Different colored liquids. And then you

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