Why It Was Almost Impossible to Make the Blue LED

The mavericks who pioneered the modern pit stop made it a raceday staple that takes less than two seconds.

Just outside Paris, France, inside a high-tech vault, requiring three independently controlled keys, rests a small metallic cylinder about the diameter of a golf ball. Encased within three vacuum-sealed bell jars it may not look like much, but it is one of the most important objects on the planet. It affects nearly every aspect of our lives from the moment we are born, to the food we eat, the cars we drive, and even the medicines we take. The Last Artifact follows the high-stakes race to redefine the weight of the world reveals the untold story of one of the most important objects on the planet. The kilogram, the base unit of mass in the International System of Units, helped send humans to the moon and satellites into space. This small hunk of metal is the object against which all others are measured. Yet over time, its mass mysteriously eroded by the weight of an eyelash. A change that, unbeknownst to most, unleashed a crisis with potentially dire consequences.

A world leading team of ultra-low temperature physicists at Lancaster University decided to place a LEGO figure and four LEGO blocks inside their record-breaking dilution refrigerator. This machine - specially made at the University - is the most effective refrigerator in the world, capable of reaching 1.6 millidegrees above absolute zero (minus 273.15 Centigrade), which is about 200,000 times colder than room temperature and 2,000 times colder than deep space.

Physicist Dr Helen Czerski takes us on a journey into the science of bubbles - not just fun toys, but also powerful tools that push back the boundaries of science.

The Academy Award® nominee Cosmic Voyage combines live action with state-of-the-art computer-generated imagery to pinpoint where humans fit in our ever-expanding universe. Highlighting this journey is a "cosmic zoom" based on the powers of 10, extending from the Earth to the largest observable structures in the universe, and then back to the subnuclear realm.

Jaroslav Seifert

This shows physicist Stephen Hawking's life as he deals with the ALS that renders him immobile and unable to speak without the use of a computer. Hawking's friends, family, classmates, and peers are interviewed not only about his theories but the man himself.

What caused Building 7 to collapse on 9/11? Dr. Leroy Hulsey from the University of Alaska Fairbanks may have the answer, following an exhausting four year engineering study.

In the sixties, Peter Handke was one of the first to show how the business works: the writer as angry young man and pop star of the literary scene. As soon as he was on the bestseller lists, he turned his back on the hype. For many years, he has lived and worked in his house in a Parisian suburb, more quietly and more hospitably. Peter Handke's precise, free gaze becomes perceptible in his texts, his conversations, the cosmos of his notebooks.

Twenty years after A Brief History of Time flummoxed the world with its big numbers and black holes, its author, Stephen Hawking, concedes that the "ultimate theory" he'd believed to be imminent - which would conclusively explain the origins of life, the universe and everything - remains frustratingly elusive. Yet despite his failing health and the seeming impossibility of the task, Hawking is still devoted to his work; an extraordinary drive that's captured here in fleeting interview snippets and footage of the scientist sharing a microwave dinner with some fawning PhD students. Though the pop-science tutorials that dapple the first of this two-part biography are winningly perky, Hawking, alas, remains as tricky to fathom as his boggling quantum whatnots

Treats drafting as a means of visual communication and a key to organized training and planning. Discusses the importance of drafting in various fields such as architecture, engineering, and industry. Drafting allows individuals to communicate their ideas visually, leading to accurate planning and construction. It is emphasized that drafting skills open up numerous career opportunities in different industries.

They raised children, baked cakes... and built world-class fighter planes. Sixty years ago, thousands of women from Thunder Bay and the Prairies donned trousers, packed lunch pails and took up rivet guns to participate in the greatest industrial war effort in Canadian history. Like many other factories across the country from 1939 to 1945, the shop floor at Fort William's Canadian Car and Foundry was transformed from an all-male workforce to one with forty percent female workers.

A unique behind-the-scenes access to NASA’s ambitious mission to launch the James Webb Space Telescope, following a team of engineers and scientists as they take the next giant leap in our quest to understand the universe.

Narratives of ecologists and conservationists are pitted against the human tendency to engineer and control in this probing documentary on the lucrative salmon-hatchery industry.

The extraordinary story of Swedish writer Selma Lagerlöf (1858-1940), creator of Nils Holgersson, a memorable and legendary literary character, and the first female storyteller to win the Nobel Prize for Literature (1909); a woman as pioneering in her life as in her remarkable work.

THE STRAIT GUYS follows Czech-born mining engineer, George, and his fast-talking protégé, Scott, along the proposed route of the InterContinental Railway through Alaska, to the Bering Strait and onward to Russia. The “Strait Guys” endeavor to convince international governments, corporations, and indigenous tribes to green-light their $100 billion railway project, which would provide ground-based infrastructure across the continents, relieve overcrowded Pacific ports, improve global supply chains, and ease tensions between the superpowers. The US and Russia have been successfully collaborating in space for decades. Now the Strait Guys are out to prove it is also possible down here on earth.

An account of the brief life of the writer Albert Camus (1913-1960), a Frenchman born in Algeria: his Spanish origin on the isle of Menorca, his childhood in Algiers, his literary career and his constant struggle against the pomposity of French bourgeois intellectuals, his communist commitment, his love for Spain and his opposition to the independence of Algeria, since it would cause the loss of his true home, his definitive estrangement.

In Astronomy Part 2, you will learn all about the planets, asteroids, comets, meteoroids, the layers of the sun, fusion, and more. The Standard Deviants make learning astronomy easier with their unique teaching style, which incorporates humor, mnemonics, and sophisticated computer graphics.

This series also covers the essential concepts of astronomy: gravity, the light spectrum, Earth's magnetic field, the solar system, the sun, Kepler's Law, the universal law of gravitation, the Doppler Effect, and much more!

Physics is a system of models of nature according to which all phenomena are explained in terms of matter and force. Sound confusing? It doesn't have to be! Whether you need help with high school physics, need to review for a college physics class, or you're studying for the AP Physics Exam, this physics tutorial will help you understand the basics, such as Newton's Laws, the Law of Universal Gravitation, Kepler's Law and more.