This book provides an accessible overview of the ways that key areas of technology have impacted global ecosystems and natural communities. It offers a new way of thinking about the overall origins of environmental problems. Combining approaches drawn from environmental biology and the history of science and technology, it describes the motivations behind many technical advances and the settings in which they occurred, before tracing their ultimate environmental impacts. Four broad areas of human activity are described: over-harvesting of natural resources using the examples of hunting, fishing and freshwater use; farming, population, land use, and migration; discovery, synthesis and use of manufactured chemicals; and development of sources of artificial energy and the widespread pollution caused by power generation and energy use. These innovations have been driven by various forces, but in most cases new technologies have emerged out of fascinating, psychologically rich, human experiences. This book provides an introduction to these complex developments and will be essential reading for students of science, technology and society, environmental history, and the history of science and technology.
He reasoned that machine could supply . Just as in all other the ambient heat would cause the ammo- perpetual motion machines , there was a nia to boil . Even at a temperature as low hitch .
Provides essays and daily tips on Windows, Macs, AOL, the Web, viruses, computer maintenance, buying, privacy, and terminology.
Impulse, reaction, and Curtis staging. Turbines are built in two distinct types: (1) impulse and (2) reaction. Impulse turbines have stationary nozzles, and the total stage pressure drop is taken across them.
TABLE 6-1 Energy-Absorbing Capability of the Curtis Stage Reaction 2-row — Stage type Impulse wheel Sta. Rot. Combined Theoretical W/V for 0.50 0.25 . . . . . . 0.707 peak efficiency Required jet velocity, ft/s 1100 2200 550 550 AH ...
Technical Studies 1 Workbook
Readings in Technology and Civilization
Technology
John Kenneth Galbraith , in his controversial book The New Industrial State , describes the new economic situation characterized by increased technology . The economic child of technology is the large corporation , which , Galbraith ...
Teacher's Resource Book to Accompany Introduction to Technology
Investigating Technology