Image for Entropy and time

Entropy and time

Duration: 05:28

Prof Brian Cox builds sandcastles in the Namib Desert to explain why time travels in one direction. It is a result of a phenomenon called entropy; a law of physics that tells us any system tends towards disorder.

Available since: Sun 6 Mar 2011


Brian Cox

This clip is from

Wonders of the Universe Destiny

1/4 Professor Brian Cox seeks to understand the nature of time.

First broadcast: 06 Mar 2011

Image for Destiny Not currently available on BBC iPlayer

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.