大有作为

An animated short film that explains in a pedagogical way how the radio transmission works. Created by Czech filmmakers it was commissioned by Argentina Schools. The film tells the story of Curious, an extraterrestrial child that reaches the planet earth attracted by the sound waves. There he meets the Queen of Waves, an ethereal figure who teaches her step by step the process by which sound is captured, amplified, modulated and transformed into electromagnetic vibrations to be transmitted by a radial antenna.

Robert McChesney lays the blame for the US's current state of affairs squarely at the doors of the corporate boardrooms of big media, which far from delivering on their promises of more choice and more diversity, have organized a system characterized by a lack of competition, homogenization of opinion and formulaic programming.

This DVD dives into the advanced principles of Algebra. The Standard Deviants tour of the world of algebra continues with complete coverage of quadratic equations, quadratic roots and factors, and higher order polynomials. Suitable for all ages, Algebra Part 2 clearly presents these principles in a fun and approachable manner. A completely stand-alone video! Part 1 is not required.

The impact of Marx on the 20th century has been all-pervasive and world-wide. This program looks at the man, at the roots of his philosophy, at the causes and explanations of his philosophical development, and at its most direct outcome: the failed Soviet Union.

In an age when misinformation, alternative facts, and conspiracy theories have become mainstream, UFOs have risen to become one of the most-talked about pop culture phenomena. With all of this noise, how can we expect anyone to know how much of this is true? What is in our skies? What do we know, and how do we know it? And most importantly: Are we being visited?

Paul Robeson was a celebrated African-American Actor, Athlete, Singer, Writer, and Civil Rights Activist. Robeson's many achievements are chronicled in this program, ranging from playing with the NFL to graduating from Columbia Law School, performing on Broadway and in Hollywood films to founding the American Crusade against Lynching as well as Council on African Affairs. Robeson was one of the most talented performers of his time and a dedicated humanitarian who ultimately sacrificed fame and fortune for what he believed in. His association with Leftist Politics during the era of the Cold War, and frequent denouncing of American political parties led to his eventual blacklisting with other prominent writers and artists during the McCarthy Era. His talents in all areas are remarkable, and his dedication to attaining a peaceful coexistence between all the people of the world is truly admirable.

The Standard Deviants serve-up all sorts of useful trig vocabulary. Get your fill of degree and radian measurements, and a sampler platter of right triangle trigonometry.

This edition of Trigonometry includes such topics as radians, the special angles, right triangles, the Pythagorean Theorem, sine, cosine, tangent, law of cosines and law of sines.

Part 2 starts off with a quick review of graphing as well as sine, cosine and tangent. From there, this video charts new territory as we dive into amplitude, curves, double-angle formulas, sum-to-product-formulas and identities. Using computer graphics and animation, the Standard Deviants illustrate these complicated concepts far better than any blackboard!

A portrait of Chinese writer Liu Xiaobo (1955-2017), a witness of the Tiananmen Square massacre (1989), a dissident, a woodpecker who tirelessly pecked the putrid brain of the Communist regime for decades, demanding democracy loudly and fearlessly. Silenced, arrested, convicted, imprisoned, dead. Nobel Peace Prize winner in 2010, alive forever. These are his last words.

A short documentary where we learn about the endangered lemurs, owls and otters from the Knockhatch Conservation staff.