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| Reduced to hand feeding paper | Photocopying's predecessor - blueprints | |
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| Tim points out the corona wire used to attract toner with static | Rex finds other uses for static in a Van Da Graff generator | |
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| With lights tied to the arms... | ...the efficiency of an action can be observed with a long exposure film | |
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| Tim can't resist a quick nosey in the ceiling void | Duct covers 'stop all the nasty Legionnaires bugs getting out' | Finalé: a real size model of an office with a mind of its own |
