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28 How does a traffic light sense the proximity of vehicles? Feb 1 '15
21 Fracture patterns in tempered glass Jun 5 '18
21 Is it possible to “pump” a powder? Jan 23 '15
17 Why does the microwave plate start in a random direction? Mar 31 '15
16 Could a gold/{second metal} crown be created that would pass the Archimedes test cost effectively? Feb 5 '15
16 Are pontoon bridges being considered to extend bridge span? Jan 23 '15
13 Is it possible to build an air compressor with no moving parts? May 16 '15
11 How to make factory machine hard disk drive more durable? How much its estimate life span? Jun 13 '17
11 What makes the material travel through Archimedes' Screw? Mar 4 '15
11 How is lift related to airspeed? Jun 2 '15
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