Acknowledgements
This week was written by Tony Jones. The course is adapted from the book What We Cannot Know by Marcus du Sautoy.
Except for third party materials and otherwise stated (see terms and conditions [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] ), this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence.
The material acknowledged below (and within the course) is Proprietary and used under licence (not subject to Creative Commons Licence). Grateful acknowledgement is made to the following sources for permission to reproduce material in this free course:
Images
Figure 1: National Physical Laboratory (NPL): https://www.npl.co.uk/famous-faces/louis-essen
Figure 5: A photographic negative of the eclipse of 1919: https://commons.wikimedia.org/wiki/File:1919_eclipse_positive.jpg
Figure 6: Space flowing into a black hole: Courtesy Professor Andrew Hamilton https://jila.colorado.edu/~ajsh/insidebh/waterfall.html
Figure 7: Cygnus A: National Radio Astronomy Observatory (NRAO) / Associated Universities, Inc. (AU): https://astronomynow.com/2016/10/25/hotspots-in-cygnus-a-an-active-galactic-nucleus
Figure 8: The black hole in the centre of the galaxy M87; Event Horizon Telescope Collaboration: https://eventhorizontelescope.org https://creativecommons.org/licenses/by/4.0/
Figure 9: The process of ‘spaghettification’ NASA / Laura A. Whitlock, Kara C. Granger, Jane D. Mahon: https://en.wikipedia.org/wiki/File:Spaghettification_(from_NASA%27s_Imagine_the_Universe!)
Audio/Video
Video 7: Wonders of the Universe – Black Holes; BBC series: Wonders of the Universe. Episode title: Falling. BBC2 © BBC
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