This free course was written by Liz Moody and Ronald Macintyre. It was first published in February 2019 and updated in November 2021.
Except for third party materials and otherwise stated (see Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence.), this content is made available under a
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:
Figure 1: solarseven; Shutterstock
Figure 5: Jim West / Alamy Stock Photo
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