Acknowledgements

This free course was written by Andrew Norton. It was first published in February 2019 and updated December 2019 by Sheona Urquhart.

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 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:

Course image: © Thomas Jurkowski | Dreamstime.com

Figure 1 Image of George Zweig: Science History Images / Alamy

Figure 1 Image of Murray Gell-Mann: Science History Images/Alamy

Figure 4: © CERN, Geneva

Every effort has been made to contact copyright owners. If any have been inadvertently overlooked, the publishers will be pleased to make the necessary arrangements at the first opportunity.