A History of Road Vehicles

2018 ◽  
pp. 1-29
Author(s):  
David J. N. Limebeer ◽  
Matteo Massaro
Keyword(s):  
Early History ◽  
Road Vehicles ◽  
History Of ◽  
Wheeled Vehicles

Chapter 1 is almost entirely discursive and covers the early history of road vehicles, outlining some of the important technological achievements that underpin the development of modern road vehicular transport. The focus is on bicycles, motorcycles, and cars; the history of steering mechanisms for four-wheeled vehicles is considered early on. Several early engine, suspension, and tyre developments are also discussed.

Britain

2018 ◽  
Author(s):  
Caitlin C. Gillespie
Keyword(s):  
Roman Empire ◽  
Reference Point ◽  
Early History ◽  
Julius Caesar ◽  
Roman Britain ◽  
Archaeological Evidence ◽  
Imperial Expansion ◽  
History Of ◽  
The Impact

Chapter 1 establishes the historical timeframe for Roman Britain and places Boudica’s revolt in the context of Roman imperial expansion. The early history of Roman Britain shows the impact of the Romans from the time of Julius Caesar onward. After Claudius’s conquest of Britain in AD 43, Boudica’s Iceni rebelled unsuccessfully in AD 47/48. After the death of her husband Prasutagus, a number of issues combined to spark the revolt of AD 60/61. This chapter details Boudica’s revolt, focusing on discrepancies in our ancient sources and archaeological evidence. After her death, Roman rule continued to expand. While Boudica had little lasting impact on the expansion of Roman rule, she remained a cultural reference point for questions of gender and the negotiation of power in the Roman Empire.

Some early history of replica techniques for electron microscopy

1992 ◽  
Vol 50 (2) ◽  
pp. 1076-1077
Author(s):  
Robert M. Fisher
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Optical Microscope ◽  
Early History ◽  
Bulk Materials ◽  
Thin Sections ◽  
Transmission Electron ◽  
Reflected Light ◽  
History Of ◽  
Electron Microscopes

By 1940, a half dozen or so commercial or home-built transmission electron microscopes were in use for studies of the ultrastructure of matter. These operated at 30-60 kV and most pioneering microscopists were preoccupied with their search for electron transparent substrates to support dispersions of particulates or bacteria for TEM examination and did not contemplate studies of bulk materials. Metallurgist H. Mahl and other physical scientists, accustomed to examining etched, deformed or machined specimens by reflected light in the optical microscope, were also highly motivated to capitalize on the superior resolution of the electron microscope. Mahl originated several methods of preparing thin oxide or lacquer impressions of surfaces that were transparent in his 50 kV TEM. The utility of replication was recognized immediately and many variations on the theme, including two-step negative-positive replicas, soon appeared. Intense development of replica techniques slowed after 1955 but important advances still occur. The availability of 100 kV instruments, advent of thin film methods for metals and ceramics and microtoming of thin sections for biological specimens largely eliminated any need to resort to replicas.

The early history of tuberous sclerosis

1979 ◽  
Vol 115 (11) ◽  
pp. 1317-1319 ◽  
Author(s):  
J. E. Morgan
Keyword(s):  
Tuberous Sclerosis ◽  
Early History ◽  
History Of

New Light on the Early History of the Greater Northwest

2015 ◽  
Author(s):  
Alexander Henry ◽  
David Thompson
Keyword(s):  
Early History ◽  
History Of
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