Engineering, and gadgets: things that make the world work.
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How do submarines work? How do they sink and re-surface?
Started by paul.fr |
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what materials are used in soundproofing?
Started by paul.fr |
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Best structure for a ship
Started by Garabato |
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flashing light bulbs
Started by paul.fr |
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Automatic frosted glass
Started by paul.fr |
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Left or Right, what's the difference?
Started by paul.fr |
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Batteries
Started by harryneild |
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The ultimate in recycling technology
Started by Ylide |
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