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Printing press Printing press from 1811, exhibited in Munich, Germany A printing press is a device for evenly printing ink onto a print medium (substrate) such as paper or cloth. The device applies pressure to a print medium that rests on an inked surface made of movable type, thereby transferring the ink. Typically used for texts, the invention and spread of the printing press are widely regarded as among the most influential events in human history,[1] revolutionizing the way people conceive and describe the world they live in, and ushering in the period of modernity.[2] Videos Account Options Videos Enjoy your holiday favorites on the big screen. 'Tis the season for Chromecast. Privacy Terms Settings Advertising Business About

Amazing Places To Experience Around The Globe (Part 1) 98 Flares Facebook 13 Twitter 15 Google+ 60 StumbleUpon 0 Pin It Share 10 10 98 Flares × Kayangan Lake, Coron islands, Palawan, Philippines Preachers Rock, Preikestolen, Norway Economic Growth Compound Rates of Growth In the modern version of an old legend, an investment banker asks to be paid by placing one penny on the first square of a chessboard, two pennies on the second square, four on the third, etc. If the banker had asked that only the white squares be used, the initial penny would have doubled in value thirty-one times, leaving $21.5 million on the last square.

Marginal Revolution Going as far back as Andrew Weiss’s survey paper , there are various attempts to argue that the two theories make the same predictions about earnings and education. A randomly elevated individual will earn more money but is this from having learned more or from being pooled with a more productive set of peers? To explore this, let’s pursue the very good question asked by Bryan Caplan :

Public Policy Sources #37: Growth accounting: determining sources of economic growth [ Previous ] [ Contents ] [ Next ] To motivate an understanding of why productivity growth is so important for a sustained increase in real per-capita incomes, I will briefly discuss how economists determine the sources of economic growth. This is an essential exercise, for a thorough understanding of the concept of productivity growth requires us to define rigorously what productivity is and how it contributes to economic growth. Although this approach--called growth accounting--is not without flaws, it is instructive to start here to illustrate some basic concepts that are essential to the economics of growth. Central to our analysis is the reality that in an economy, firms take factor inputs such as labour, capital, and raw materials and convert these inputs into desirable outputs--goods and services. The relationship between factor inputs and outputs can be summarized mathematically by what economists call a production function.

Street Sweep - Fortune Finance: Hedge Funds, Markets, Mergers & Acquisitions, Private Equity, Venture Capital, Wall Street, Washington Apparently Bernie Madoff wasn't the only bad apple at Nasdaq. In the latest shining moment for the U.S. stock exchanges, the Securities and Exchange Commission on Thursday charged Donald Johnson, a former Nasdaq managing director, with ripping off investors to the tune of $755,000 by insider trading ahead of the release of corporate press releases. Johnson, you will be impressed to learn, was in charge through October 2009 of the Nasdaq's "market intelligence" desk, which is surely a misnomer but seems in any case to have afforded him with a lot of info he used to trade profitably on outfits like United Therapeutics (UTHR).

Public Policy Sources #37:Growth theory: the causes of economic growth [ Previous ] [ Contents ] [ Next ] Understanding the sources of economic growth is important. Our central concern, however, is with the causes of economic growth and it is difficult to say much about that without a theory of growth. Magazine - Table of Contents The Thirteenth Amendment forbade slavery and involuntary servitude, “except as punishment for crime whereof the party shall have been duly convicted.” Crops stretch to the horizon. Black bodies pepper the landscape, hunched over as they work the fields. Officers on horseback, armed, oversee the workers. To the untrained eye, the scenes in Angola for Life: Rehabilitation and Reform Inside the Louisiana State Penitentiary, an Atlantic documentary filmed on an old Southern slave-plantation-turned-prison, could have been shot 150 years ago. The imagery haunts, and the stench of slavery and racial oppression lingers through the 13 minutes of footage.

Business - Derek Thompson - The Economic History of the Last 2000 Years: Part III Early this week, I posted a little graph of the economic history of the world, after 1 AD, from a research letter written by Michael Cembalest, chairman of market and investment strategy at JP Morgan. On Wednesday, I posted follow-up graphs to track GDP/capita -- a rough proxy for income, and even productivity -- through the last 2000 years. Here's the last installment. MITx Opens for Enrollment (and Certification - For Now - Is Free) MIT opens registration today for the first of its online courses offered as part of its new MITx initiative. The university announced MITx late last year as the next step not just in informal online learning but in alternative certification. Registration for MITx is free and open to anyone, and for this first "prototype" class, there is no additional charge to receive the certification upon successful completion of the class. This first class is "6.002x: Circuits and Electronics." It will run from March 5 through June 8 and will be taught by Anant Agarwal and Chris Terman (co-directors of MIT's Computer Science and Artificial Intelligence Laboratory), Piotr Mitros (one of CSAIL's research scientists), and Gerald Sussman (a professor in the department of electrical engineering and computer science).

New methods for Comparing Literacy across Populations: Insights from the Measurement of Poverty Share: MyIDEAS : Login Powered by Translate Abstract This paper analyses levels of low literacy across twelve countries using the International Adult Literacy Survey. We go beyond existing work that looks at the proportions below certain critical level of literacy.