Screens

How teens navigate a networked world and how adults can support them. What are teens actually doing on their smartphones? Contrary to many adults’ assumptions, they are not simply “addicted” to their screens, oblivious to the afterlife of what they post, or missing out on personal connection. They are just trying to navigate a networked world. In Behind Their Screens, Emily Weinstein and Carrie James, Harvard researchers who are experts on teens and technology, explore the complexities that teens face in their digital lives, and suggest that many adult efforts to help—“Get off your phone!” “Just don’t sext!”—fall short. Weinstein and James warn against a single-minded focus by adults on “screen time.” Teens worry about dependence on their devices, but disconnecting means being out of the loop socially, with absence perceived as rudeness or even a failure to be there for a struggling friend. Drawing on a multiyear project that surveyed more than 3,500 teens, the authors explain that young people need empathy, not exasperated eye-rolling. Adults should understand the complicated nature of teens’ online life rather than issue commands, and they should normalize—let teens know that their challenges are shared by others—without minimizing or dismissing. Along the way, Weinstein and James describe different kinds of sexting and explain such phenomena as watermarking nudes, comparison quicksand, digital pacifiers, and collecting receipts. Behind Their Screens offers essential reading for any adult who cares about supporting teens in an online world.

How do you keep your kids safe in a digital world? Maybe your kids are like so many others these days-too often glued to their smartphones, social media, and streaming entertainment-and you're worried. Or maybe you're wondering how to avoid digital overload. You definitely want your kids to use devices wisely...but how do you -teach them to do that? Many parents wonder: At what age should I buy my kid a phone? How long should I allow my kid to play video games each day? How can I keep my kids safe with the screens they already have? At what age should I allow my kids on social media? What if my teen insists on having their device in their bedroom at night? Parenting Generation Screen will not only equip you to set practical screen limits for your kids but also show you how to engage in meaningful conversations with your kids so they learn to be wise in the digital world. Jonathan's expert advice draws upon more than twenty years of working with teenagers and writing about the influence of digital media as well as his experiences in raising three kids (with plenty of devices!). Book jacket.

An entertaining and insightful guide to the world of design.

This is a comprehensive book that analyses the scientific evidence linking tobacco smoking to disease and premature death, as well as the political motivations that have led to the anti-smoking movement becoming so large. The book explores all aspects of tobacco smoking, including: smoking trends among social classes; detection bias and its impact on diagnosis; and examines in depth the evidence linking smoking to specific diseases; how attitudes towards smoking have changed over time from being used medicinally to being the scourge of society; and how and why tobacco smoking has the negative status it does today. It objectively dissects the politics and science of smoking trends and issues, looking at vital, complex components that are often overlooked. A must-read for smokers and non-smokers alike, Smoke Screens: The Truth About Tobacco is a controversial work that challenges one of the most widely accepted beliefs of our time.

Jean Genet was one of the world's greatest contemporary dramatists, and his last play, The Screens, is his crowning achievement. It strikes a powerful, closing chord to the formidable theatrical work that began with Deathwatch and continued, with even bolder variations, in The Maids, The Balcony, and The Blacks. Explicitly political, The Screens is set within the context of the Algerian War. The play's cast of over fifty characters moves through seventeen scenes, the world of the living breaching the world of the dead by means of shifting the screens--the only scenery--in a brilliant tour de force of spectacle and drama.

Why screens in schools—from film screenings to instructional television to personal computers—did not bring about the educational revolution promised by reformers. Long before Chromebook giveaways and remote learning, screen media technologies were enthusiastically promoted by American education reformers. Again and again, as schools deployed film screenings, television programs, and computer games, screen-based learning was touted as a cure for all educational ills. But the transformation promised by advocates for screens in schools never happened. In this book, Victoria Cain chronicles important episodes in the history of educational technology, as reformers, technocrats, public television producers, and computer scientists tried to harness the power of screen-based media to shape successive generations of students. Cain describes how, beginning in the 1930s, champions of educational technology saw screens in schools as essential tools for training citizens, and presented films to that end. (Among the films screened for educational purposes was the notoriously racist Birth of a Nation.) In the 1950s and 1960s, both technocrats and leftist educators turned to screens to prepare young Americans for Cold War citizenship, and from the 1970s through the 1990s, as commercial television and personal computers arrived in classrooms, screens in schools represented an increasingly privatized vision of schooling and civic engagement. Cain argues that the story of screens in schools is not simply about efforts to develop the right technological tools; rather, it reflects ongoing tensions over citizenship, racial politics, private funding, and distrust of teachers. Ultimately, she shows that the technologies that reformers had envisioned as improving education and training students in civic participation in fact deepened educational inequities.

A goniophotometer was developed for use in measuring the diffusion characteristics of rear projection screen materials. Rear projection screens provide a wide range of possible diffusion characteristics. Similarly, different applications require different characteristics. The goniophotometer will facilitate the selection of screens most suitable for a particular application. Primary components of the device include a light tight chassis, a light source mounted on an arm which can be rotated plus or minus 60 degrees, a holder for screen specimens, a specifically designed photometer, and two interior ambient light panels and associated interior foot candle meters. Schematics, wiring diagrams, and drawings necessary for the fabrication of additional units are included. (Author).