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Issue: 142, 17/07/30 p. 443-444
Heading: Steam-Carriages
Category: Steam Power   Physics   Mechanics   Engineering   Philosophy Of Science   Theory And Practice   
Topic: [The limitations of steam power. Steam engines could not be made to go up hills without making them wastefully large. As yet this only makes them suitable for level railways. It is impossible to predict what future changes may be made. In the case of steam navigation it took from 1736 (when the idea of steam-boats was first patented) to 1805, to put a boat to sea]
Ed`s Mark: PARKE

Issue: 142, 17/07/30 p. 444
Heading: Sheathing of Ships
Category: Engineering   Materials Testing   Ships   Physics   Chemistry   Philosophy Of Science   Theory And Practice   
Topic: [Copper bottoms for ships are effective at stopping shells and seaweeds attaching themselves but the copper soon wears out. If the copper is in contact with zinc or iron, this does not happen. (Davy made some unsuccessful experiments on "sheathing" ships and another unnamed "scientific man" is working on the same thing now). Even if this research into electric action on metals may not be applied to the cladding of ships, it may be applied to other structures or in building]
Person: DAVY, Sir Humphrey   
Ed`s Mark: PARKE

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