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Chris Johns

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 5 years
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  • Last seen 2 days ago

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107 Why do glass windows still exist? (Why haven't they been replaced by plastics?) Feb 13 '16
36 Why did steam locomotives not transfer power by cogwheels? Mar 1 '18
26 From an engineering point of view what are the downsides of a too accurate model? Nov 29 '17
24 Why would you launch a large ship by dropping it sideways? Feb 21 '16
18 Is it possible for a bicycle chainwheel to have a fractional number of teeth? Jan 25 '16
17 Why was Freon used in spray cans before it was declared a threat to ozone? Feb 18 '17
12 Why wont Petrol engine run on Acetylene? May 30 '16
11 Is it useful to stuff my glasses with newspaper to protect them? Mar 20 '18
11 What material is used to hold molten iron in a furnace? Feb 3 '16
10 Why use bushings of different material than what they contact? Jan 25 '16
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