Text and illustrations trace the history of manned flight from the drawings of Leonardo da Vinci to jet engines and spacecraft.

Men in the Air

Science & Math

Hart, Roger

Astronomy & Space Science

Praeger Publishers

Witchcraft

Religion & Spirituality

Putnam Pub. Group

All about te daily life in England's Chaucer's day

English life in Chaucer's day

G.P.Putnam's Sons

Children's experience of place

Irvington Publishers : distributed by Halsted Press

Inside the Apple Laserwriter

Computers & Technology

Hardware & DIY

Scott, Foresman-Addison Wesley

ONE MAN'S REMARKABLE SEARCH FOR THE ULTIMATE TRUTHS OF OUR WORLD For Professor Roger Hart, life truly began after he almost lost his -- in a horrific fall off the slopes of Mount Everest that he miraculously survived. This near-death experience sparked a desire in him to devote his studies to the very nature of human consciousness, in order to unlock the code of reality that binds our world. On an adventure of discovery that would take him around the world, Hart would experience life-altering transcendental events in Tibet, Morocco, and Tierra del Fuego -- opening the door to a true understanding of the nature of man. In this groundbreaking volume, he explores the participation of consciousness in the creation of reality, challenging the traditional scientific view of time, space, and objectivity -- and describing in detail his own metaphysical journey, which has involved synchronicity, precognition, and telekinesis. It is an exploration of the very things that make us human -- and a quest that touches upon the meaning of life itself.

The Phaselock Code: Through Time, Death and Reality: The Metaphysical Adventures of Man

Biographies & Memoirs

Community & Culture

GALLERY BOOKS

A monumental accomplishment in the history of non-Western mathematics, The Chinese Roots of Linear Algebra explains the fundamentally visual way Chinese mathematicians understood and solved mathematical problems. It argues convincingly that what the West "discovered" in the sixteenth and seventeenth centuries had already been known to the Chinese for 1,000 years.
Accomplished historian and Chinese-language scholar Roger Hart examines Nine Chapters of Mathematical Arts―the classic ancient Chinese mathematics text―and the arcane art of fangcheng, one of the most significant branches of mathematics in Imperial China. Practiced between the first and seventeenth centuries by anonymous and most likely illiterate adepts, fangcheng involves manipulating counting rods on a counting board. It is essentially equivalent to the solution of systems of N equations in N unknowns in modern algebra, and its practice, Hart reveals, was visual and algorithmic. Fangcheng practitioners viewed problems in two dimensions as an array of numbers across counting boards. By "cross multiplying" these, they derived solutions of systems of linear equations that are not found in ancient Greek or early European mathematics. Doing so within a column equates to Gaussian elimination, while the same operation among individual entries produces determinantal-style solutions. 
Mathematicians and historians of mathematics and science will find in The Chinese Roots of Linear Algebra new ways to conceptualize the intellectual development of linear algebra.

The Chinese Roots of Linear Algebra

History

Africa

Johns Hopkins University Press

English Life in the Seventeenth Century English Heritage Series by Roger Hart 1970 G.P. Putnam's Sons New York

English life in the seventeenth century (The English life series)

WAYLAND PUBLISHERS LTD

English life in the eighteenth century (The English life series)

Provides the history of Witchcraft with contemporary illustrations and detailed text. Includes great Witch Hunts in Europe, England and Scotland, and the Salem Witch Trials. With glossary.

Occult & Paranormal

See the best price to sell, buy, or rent books by Hart, Roger. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by Hart, Roger