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- DNA (29095 bytes)
1: ...paceFilling.jpg|thumb|right|125px|Space-filling model of a section of DNA molecule]]
3: ...specifying the [[developmental biology|biological development]] of all cellular forms of [[life]] (and...
8: ... may be a precursor to a generation of electronic devices and computers, but what are the electronic p...
10: ...ning that this is not necessarily a very accurate description, and that it's only meant as a generic o...
12: ...m not saying is happening here) is also to be avoided. --[[User:Lexor|Lexor]]|[[User talk:Lexor|Talk]] - History of rail transport (7056 bytes)
9: ...wheels for use on a scheme in [[Loughborough]], [[Leicestershire]] (in [[1789]]). In [[1802]], Jessop opened the [...
11: ...for locomotive power until [[Richard Trevithick]] developed the high pressure steam engine in the 1800...
14: ...s too heavy for the track and kept breaking down. Despite his inventive talents, Richard Trevithick di...
18: ...switches]] and rails, and opened the way to the modern railroad.
22: ...he swift movement of goods and labour that was needed for [[industrialization]]. In the beginning, [[C... - Rail transport (15539 bytes)
3: ...[[timber]], [[concrete]] or other material. The underlying support maintains the rails at a fixed dist...
8: ...he car on two four wheel support trucks. Fully loaded, the contact between each wheel and the rail is ...
9: ...air resistance]] and thus energy usage. In all, under the right circumstances, a [[train]] needs 50-70...
11: Rail transport is also one of the safest modes of transport, and also makes a highly efficient ...
15: ...t have in some times and places been reduced in order to save money (see [[Beeching Axe]]). Conversely... - Timeline of railway history (5902 bytes)
6: ...edge rails on coal railway at [[Loughborough]], [[Leicestershire]].
15: ...ar [[Wurzen]], in [[1839]] the line reaches [[Dresden]].
17: * [[1853]] Passenger train makes in debut in [[Bombay]], India
21: *[[1863]] World's first [[underground railway]] opened in [[London]].
22: ...on proves rare for steam locomotives but is the model for most future diesel and electric locomotives.
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