INTRODUCTION Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to transmit data for telecommunications orcomputer networking. "Free space" means air‚ outer space‚ vacuum‚ or something similar. This contrasts with using solids such as optical fiber cable or an optical transmission line. The technology is useful where the physical connections are impractical due to high costs or other considerations. Free-space optical communication
Premium Laser Optical fiber
Is space exploration worth the cost? by David Livingston Monday‚ January 21‚ 2008 Editor’s Note: On January 11‚ the New York Times blog “Freakonomics” published a lengthy post titled “Is Space Exploration Worth the Cost? A Freakonomics Quorum”. The post featured comments provided by a number of people‚ including David Livingston‚ in response to the question. The part attributed to Dr. Livingston was just a highly-edited version of what he originally submitted to the Times. What follows is
Premium Space exploration NASA Outer space
JACK C BUSCH DR G MITSIS ENC1101 07 JUNE 2011 ESSAY # 1 The ability to “alter public space” can often be a negative reaction by society guided by fear and prejudice as depicted by Brent Staples’ in his essay “Just Walk On By”. But can one’s appearance “alter public space” in a positive manner? Because of his appearance as a young‚ burly‚ six-foot-two black man with a beard and billowing hair‚ Staples is perceived by others to be violent or a criminal. Staples could use his appearance as a
Free Stereotype Prejudice
Should the United States be involved in the major exploration of space or the ocean? Today we are going to be discussing space and the ocean. In this article we are going to be discussing a question should the Unites States be involved in the major exploration of space or the ocean? My answer to that is the United States should be involved in the major exploration of the ocean. Now in the next paragraph i am going to tell you why. This paragraph is going to be about the ocean and why i chose it
Premium
Everything that on the Earth similar to that in the sky. Hermes Trismegist For thousand-year history human being has always tried to learn the world around him and looked into illimitable spaces of the sky. Human being has always felt hunger for knowledge. Thirst for new knowledge has always presented in the human being. The human nature itself has leaded us to discover previously unknown secrets. I have always liked Apple Company. Now‚ when I have learned more about Steve Jobs‚ one of
Premium Universe Solar System Human
IS^SUES A If You Need Love‚ Get a Puppy: Case Study on Professional Skepticism and Auditor Independence Robert L. Braun and H. Lynn Stallworth ABSTRACT The purpose of this ieaching case is to expand students’ understanding of the concepts of professional skepticism and independence. The case is based on an actual incident and illustrates the exercise of professional skepticism by a staff auditor who finds himself in the uncomfortable situation of accusing a friend of fraud. The case demonstrates the
Premium Audit Auditing Deposit account
Chapter 1 Introduction 1.1 History of Free Space Optics Even though fibre-optic communications gained worldwide acceptance in the telecommunication industry‚ FSO communications is still considered relatively new. But optical communication‚ in various forms‚ has been used for thousands of years. The Ancient Greeks polished their shields to send signals during battle. In the modern era‚ semaphores and wireless solar telegraphs called heliographs were developed‚ using coded signals to communicate
Premium Optical fiber Laser
As debates rise over whether active SETI should be pursued‚ perhaps the debate should spend some time deciding what messages should be sent into space. Afterall‚ a large part of determining whether humans should actively seek for contact with extraterrestrials lies in deciding if the repercussions of such actions would be positive or negative to the human race; positive or negative that would be in large part due to the messages sent. The importance of the content of messages shows its significance
Premium Communication Sociology Human
• Space Cadre Definitions • Recognize and Award Space Cadre Soldiers • Identifying Army Space Cadre billets • Expansion of the 3Y ASI to Billets • Enlisted Space Force What is the Army Space Cadre Soldiers and Army civilians whose principal duties include planning‚ developing‚ resourcing‚ acquiring‚ integrating‚ or operating Space forces‚ systems‚ concepts‚ applications‚ or capabilities in any element of the four Space mission areas: Space Support‚ Space Force Enhancement‚ Space Control
Premium Military Soldier Army
Culture is ever changing across time and space. People study artifacts to better understand cultural norms as well as what the people went through on a day-to-day basis. An artifact can be interpreted in many different ways since they have multiple meanings. These multiple meanings may be hard to understand if you‚ as the viewer‚ do not know anything about the culture prior to viewing this artifact. Office Space is an example of a cultural artifact of the United States in the 1990’s. It takes
Premium Office Space