ISBN: 9781334234743 - protest of warren s. johnson to report of sub-committee on the philadelphia city hall clock (classic reprint) (3 risultati)

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condizione: New. Print on Demand. This book explores the technical discoveries and institutional decisions that shaped the mechanisms of the Philadelphia's City Hall's famed astronomical clock, built between 1899-1902, and weighing over 50,000 pounds. The author, a specialist in horology, gives an insider's narrative of one of the largest and most accurate timekeeping devices of its era, a project that presented the challenge of having the dials more than 280 feet above the street below. He discusses the methods used to operate the clock and its dials, arguing the clock was a historic success of the new electrical technology. Along the way, the author details the bureaucratic struggles, inaccuracies, and political interference that plagued the clock's inception and installation. Ultimately, this book provides a rich account of both the science and politics behind one of Philadelphia's architectural landmarks. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. …