What would we see if we could journey through time, from Earth’s birth up to its death? Join us today on a voyage through time, from planetary creation to the blossoming of life, from the first civilizations to the planet’s ultimate demise.
From the award-winning team that brought you The Secret Life of Chaos comes a unique television event on the physics of gravity, featuring unexpected historical insights, cutting-edge science and exciting new experiments.
With the brilliant Professor Jim Al-Khalili as our host, we visit the LIGO lab in the USA where gravity waves were discovered and uncover the latest theories about our cosmos that have come from studying the most intense sources of gravity imaginable – black holes.
Elsewhere, Jim even uses Albert Einstein’s theories of special and general relativity to work out how the rate at which you age is affected by gravity and the speed at which you move about.
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CORRECTIONS:
— This is a re-upload with the «Slightly Safer For Schools Soundtrack» audio track from the DVD for class use (the censoring is deliberately blatant/badly done). It takes out one naughty word!
Sundial time and clock time often do not agree — the equation of time allows us to correct sundial time to clock time. This video explains how to use the equation of time and a basic explanation of the issues involved.
The equation of time represents the relationship between our planets orbital geometry and time as displayed on a sundial.
tomscott.com — twitter.com/tomscott — In Trinity Buoy Wharf lighthouse in London — and a few other science museums around the world — sits Longplayer, a musical composition designed to last a millennium. How do you keep something running for that long?
Thanks to Rob Blake for holding the camera through the many takes. This one took a while…
And thanks to Martin Deutsch for reminding me about Longplayer!
techdif.co.uk — Were back! We start with the tale of Thomas Trueblood, rapidly steer off into the 1904 Olympic marathon — perhaps the most ridiculous Olympic race ever — and then have a quick discussion about a man called Jam Handy. Get your mystery biscuits ready.
