| Springer Nature B.V.

66,000원  | 20221202  | 9789811948244

This book presents the key technologies of coherent optical wireless communication, covers topics such as beam coupling, signal optical polarization control and distorted wavefront correction. It discusses the principle of coherent optical communication and heterodyne detection conditions.

 | Campbell Press

51,140원  | 20080630  | 9781409784968

Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

 | White Press

23,080원  | 20180621  | 9781528704892

First published in 1911, this vintage book contains a complete guide to learning and mastering fore-arm rotation for piano playing, by Tobias Matthay. Forearm rotation is the movement your arm makes when you turn your hand from palm down to palm up in front of your body. It is a fundamental technique of piano playing that needs to be learnt and understood, which Matthay helps the piano learner to do in this timeless volume with the aid of simple explanations and useful diagrams.

 | Legare Street Press

31,270원  | 20210910  | 9781015289949

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.