William Shepherd Books

Focusing on the intricacies of power conversion, this book delves into rectification, inversion, and conversion circuits, detailing essential relationships and properties. It combines classical mathematical methods with numerous practical examples, making complex concepts accessible. Authored by experts in the field, it comprehensively addresses AC to DC, DC to AC, AC to AC, and DC to DC converters. The inclusion of hundreds of chapter-specific problems, along with solutions, enhances its utility for both students and professionals in electrical engineering.

The book is a facsimile reprint, which means it reproduces the original work, potentially including imperfections like marks, notations, marginalia, and flawed pages. This aspect may provide a unique glimpse into the historical context and the original reader's interactions with the text.

Focusing on the comprehensive exploration of the Americas, this work is part of the Sabin Americana collection, which documents over 400 years of history from the late 15th century to the early 20th century. It encompasses a wide array of topics, including exploration, military actions, Native American history, and cultural developments. The collection features high-quality digital scans of original documents, making it an invaluable resource for libraries, students, and scholars interested in the diverse narratives that shaped the western hemisphere.

Plataea 479 BC: Greece's Greatest Victory. číst celé

During the Peloponnesian War the Athenians occupied the promontory of Pylos to counter Sparta's repeated invasions of Attica. Over two days of fighting the small garrison beat off the Spartan army and the returning Athenian fleet won a victory in the nearby waters, stranding a contingent of elite Spartan hoplites on the island of Sphacteria.

Weaving together the accounts of the ancient historian Herodotus with other ancient sources, this is the engrossing story of the triumph of Greece over the mighty Persian Empire.

Osprey's study of a crucial battle of the Grerco-Persian Wars (499-449 BC). Weeks after the glorious disaster at Thermopylae and heavy but inconclusive fighting at sea off Artemisium, with Athens now in barbarian hands and the Acropolis burned, the Greeks dramatically halted the Persian invasion of 480BC.  They brought the 600-strong Persian fleet to battle with their 350 triremes in the confined waters of the straits of Salamis and, through a combination of superior tactics and fighting spirit, won a crushing victory.  This drove the Persian navy out of the western Aegean and enabled the Hellenic Alliance to combine its manpower in sufficient force to destroy the massive occupying army in the following year.  Victory over the Persians secured the 5th century flowering of Greek and, in particular, Athenian culture and institutions that so influenced the subsequent development of western civilisation.This book draws extensively on the findings of archaeological, technological and naval research, as well as on the historical sources to vividly recreate one of the most important naval campaigns in world history.