Get A History of Natural Philosophy: From the Ancient World to PDF

Read e-book online Telegraph Messenger Boys: Labor, Communication and PDF

In Telegraph Messenger Boys Gregory J. Downey presents a completely new viewpoint at the telegraph method: a communications community that revolutionized human perceptions of time and house. The booklet is going past the arrival of the telegraphy and tells a broader tale of human interplay with know-how and the social and cultural alterations it led to.

Read e-book online Challenges and Goals for Accelerators in the XXI Century PDF

The previous a hundred years of accelerator-based study have led the sphere from first insights into the constitution of atoms to the advance and affirmation of the traditional version of physics. Accelerators were a key device in constructing our knowing of the straightforward debris and the forces that govern their interactions.

The Tunnel under the Lake: The Engineering Marvel That Saved by Benjamin Sells PDF

The Tunnel lower than the Lake recounts the gripping tale of ways the younger urban of Chicago, below the management of an audacious engineer named Ellis Chesbrough, built a two-mile tunnel less than Lake Michigan looking for fresh water. regardless of Chicago's situation beside the world’s biggest resource of unpolluted water, its low elevation on the finish of Lake Michigan supplied no normal approach to sporting away waste.

New PDF release: For Fun and Profit: A History of the Free and Open Source

Within the Nineteen Eighties, there has been a revolution with far-reaching outcomes -- a revolution to revive software program freedom. within the early Nineteen Eighties, after many years of constructing resource code to be had with courses, such a lot programmers ceased sharing code freely. A band of revolutionaries, self-described "hackers," challenged this new norm through development working platforms with resource code that may be freely shared.