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# Acknowledgements

This free course was written by Maria Velasco-Garcia and adapted by Nicolette Habgood.

Except for third party materials and otherwise stated (see terms and conditions), 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:

115685 Figure 1a: © Juangonzalez64

115686 Figure 1b: © Hawyih

213984 Figure 2: Moving Moment / Shutterstock

232138 Figure 8: Charles D Winters / Photo Researchers / Universal Images Group

213977 Figure 12a: Kim Traynor This file is licensed under a Creative Commons CC 2.0 license

213978 Figure 12b: Nieuwland Photography / Alamy Stock Photo

213979 Figure 12c: vsoldatov5 / Shutterstock

213980 Figure 12d: blickpixel / Pixabay

213981 Figure 12e: Cristina Pedrazzini / Science Photo Library / Universal Images Group

213982 Figure 12f: LAWRENCE LIVERMORE NATIONAL LABORATORY / SCIENCE PHOTO LIBRARY (NOT CLEARED)

106373 Figure 13: Richard Treptow / Photo Researchers / Universal Images Group

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.

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Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.