Over 4000 free audio and video lectures, seminars and teaching resources from Oxford University.
Skip to Content Skip to Navigation

Thank you for visiting! Please consider filling out our questionnaire. This will help us improve our service providing free educational media recorded from the University of Oxford. Many thanks!

Click here to access the survey (3 minutes to complete).

The Einstein Lens and a Tale of Two Eclipses

Loading Video...
Duration: 0:51:56 | Added: 24 Nov 2015
Loading Video...
Duration: 0:51:50 | Added: 24 Nov 2015
Physics Colloquium 20th November 2015 delivered by Professor Tom Ray

This year marks the centenary of Einstein’s General Theory of Relativity. As is well known, physicists became convinced that Einstein was right after Eddington’s and Dyson’s famous expedition to measure the gravitational deflection of starlight. Recently the speaker has found the equipment that proved critical in testing Einstein’s theory after it being lost for almost 70 years. Remarkably its discovery has led to the finding that earlier eclipse data may have been conveniently ignored. The finger of suspicion points at Sir Frank Dyson, the Astronomer Royal, who was trying to protect Eddington from being conscripted into the British Army during World War I.

Oxford Unit:
Copy and paste this HTML snippet to embed the audio or video on your site:
Copy and paste this HTML snippet to embed the audio or video on your site: