Simply the Best Documentaries

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Last Days in Vietnam
Deep Sea
An Everyday Miracle
Mysteries of the Unseen World
St Peter and the Papal Basilicas of Rome
Carlsbad Caverns
Tales by Light Submerged
Cooked: Earth
The Eagle Huntress
The Armstrong Lie
Secret Forests
Worst Days on Planet Earth
Atom: The Key to the Cosmos
The Great Levelling
The Story of the Jews: In the Beginning
Zero Days
The Lost Worlds of Planet Earth
The Age of Aging
The Making of Jurassic Park
One Life on the Limit
Climate Change: A Horizon Guide
Life: Insects
First Second of the Big Bang
Plastic Planet
Life of a Universe Creation
Orbit: Earth Extraordinary Journey July to December
Blues for a Red Planet
Heart of a Dog
Prescription Thugs
Through the Wormhole: Is There a Creator
In The Sign Of The Cross
Oceans of the Solar System
Beyond Death
Parallel Worlds Parallel Lives

Order by   Views  Year  New Added  Featured  Title

A Sky Full of Ghosts
A Sky Full of Ghosts 2014

Tyson begins the episode by explaining the nature of the speed of light and how much of what is seen of the observable universe is from light emanated from billions of years in the past. Tyson further explains how modern astronomy has used such analyzes via deep time to identify the Big Bang event and the age of the universe. Tyson proceeds to describe how the work of Isaac Newton, William Herschel, and James Clerk Maxwell contributed to understanding the nature of electromagnetic waves and gravitational force, and how this work led towards Albert Einstein's Theory of Relativity, that the speed of light is a fundamental constant of the universe and gravity can be seen as distortion of the fabric of space-time. Tyson describes the concept of dark stars as postulated by John Michell which are not visible but detectable by tracking other stars trapped within their gravity wells, an idea Herschel used to discover binary stars. Tyson then describes the nature of black holes, their enormous gravitational forces that can even capture light, and their discovery via X-ray sources such as Cygnus X-1. Tyson uses the Ship of Imagination to provide a postulate of the warping of spacetime and time dilation as one enters the event horizon of the black hole, and the possibility that these may lead to other points within our universe or others, or even time travel. Tyson ends on noting that Herschel's son, John would be inspired by his father to continue to document the known stars as well as contributions towards photography that play on the same nature of deep time used by astronomers.

Category:Science  Duration:41:00   Series: Cosmos 2014

Absolute Zero Conquest of Cold
Absolute Zero Conquest of Cold 2007

This scientific detective tale tells the story of a remarkable group of pioneers who wanted to reach the ultimate extreme: absolute zero, a place so cold that the physical world as we know it doesn't exist, electricity flows without resistance, fluids defy gravity and the speed of light can be reduced to 38 miles per hour. Absolute zero became the Holy Grail of temperature physicists and is considered the gateway to many new technologies, such as nano-construction, neurological networks and quantum computing. The possibilities, it seems, are limitless. The first episode Chronicles the major discoveries leading towards the mastery of cold, beginning with King James I's court magician, Cornelius Drebbel, who managed to air condition the largest interior space in the British Isles in 1620. Other stories will include the first "natural philosopher," Robert Boyle, a founder of the Royal Society in Great Britain; the Grand Duke Ferdinand II de Medici's involvement in the creation of the first thermometer; the establishment of the laws of thermodynamics by three young scientists, Sadi Carnot, James Joule and William Thomson; and Michael Faraday's critical achievement in liquefying several other gases which set the stage for the commercial application of cold to refrigeration and air conditioning.

Category:Technology  Duration:59:00   Series: Absolute Zero

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