Segments in this Video

Concept of Time (08:52)

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Brian Cox explores time— a fundamental concept of human experience. Many of us are disconnected from what time measurements really signify. The Earth spins on its axis once every 24 hours; a Eurofighter helps illustrate the process.

Measuring the Passage of time (04:26)

Ancient peoples' measuring attempts are often massive. The towers at Chanquillo form an ancient solar calendar.

Atomic Clocks (04:46)

Identifying the sun's location is not a sufficient way to measure time accurately. One can identify accurate natural clocks in the subatomic world. Cox examines clocks at the U.S. Naval Observatory and discusses cesium atoms.

Cosmic Time (05:32)

Cox witnesses sea turtles come ashore to lay eggs on Playa Ostional; the event is part of one the oldest life cycles on Earth. The solar system travels on a vast orbit; it takes 250 million years to make one circuit of the Milky Way.

Deep Time (06:04)

Much of what we believe is in the present draws from the past. Light's finite speed allows us to look back billions of years. Steve Beckwith discusses a photograph he took with the Hubble Telescope in 2004. The James Webb Telescope is more sensitive to infrared light.

Spacetime (05:36)

Experts do not know for sure whether time travel is possible. Cox believes the desire to go back in time ties into the tragedy of human experience. He discusses Einstein's Theory of Relativity and returning to the past.

Time Dimension (05:21)

We all travel into the future all of the time, but the mixing of time and space causes each of us to do it at a different rate. How fast you move and what you are next to affects time. Cox discusses the Hafele–Keating experiment.

End of Time (07:39)

The Skeleton Coast is one of the most inhospitable places on Earth. Black dwarves will be the final fate of the last stars; their dense matter will evaporate into the void as radiation. Particles of light and black holes will be all that remain of the cosmos.

Credits: What is Time?—Brian Cox’s Adventures in Space and Time (00:32)

Credits: What is Time?—Brian Cox’s Adventures in Space and Time

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What is Time?—Brian Cox’s Adventures in Space and Time

Part of the Series : Brian Cox’s Adventures in Space and Time
DVD (Chaptered) Price: $169.95
DVD + 3-Year Streaming Price: $254.93
3-Year Streaming Price: $169.95

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Description

Brian explores a simple question that is causing a big stir today: what is time? Modern science shows it to be far stranger than we think. He recalls some highlights from his TV series that touch upon different sides of this physics conundrum: from a mindboggling encounter with Doctor Who, to breaking the sound barrier in a Eurofighter in order to see two sunsets in one day, to witnessing one of the oldest animal life cycles on Earth on a remote beach in Costa Rica. He also explores Chankillo, the oldest and best-preserved astronomical observatory in the Americas.

Length: 51 minutes

Item#: BVL276476

ISBN: 978-1-63722-824-1

Copyright date: ©2021

Closed Captioned

Performance Rights

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Not available to Home Video and Publisher customers.


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