Quantum mechanics provides the fundamental theoretical apparatus for describing the structure and properties of atoms and molecules in terms of the behaviour of their fundamental components, electrons and nudeL For heavy atoms and molecules containing them, the electrons can move at speeds which represent a substantial fraction of the speed of light, and thus relativity must be taken into account. Relativistic quantum mechanics therefore provides the basic formalism for calculating the properties of heavy-atom systems. The purpose of this book is to provide a detailed description of the...

This text brings together extracts from key writings on psychology from all over the world. It is an imaginative combination of case notes, journals and letters as well as more formal writings that presents humanity's significant attempts to understand the workings of the mind.

"Sell Photos Online" teaches you all you need to know to earn money with your digital camera. Take advantage of this great opportunity to establish a new financial future for you and your family thanks to your digital still or video camera. Stephen Wilson has written some of the Web's most trusted tutorials on selling photos online. He is an advertising professional who has bought hundreds of photos on sites like IStockphoto. Now you can let him show you the kinds of photos that buyers are looking for on microstock sites. These are simple tips and subjects that will let even amateur...

This book is a collection of an extraordinary honest collection of poems highlighting self harm and depression and the struggle to cope with the feeling attached with the conditions. It chronicles some of the feelings and thoughts that have gone through the authors mind during his darkest days. These poems are a reflective period to put them out in the open to help others and inspire them to air their thoughts poetry. This book is written to support the charity that has been formed to help those sufferers of self harm and depression, The Silent Cry.

Quantum mechanics provides the fundamental theoretical apparatus for describing the structure and properties of atoms and molecules in terms of the behaviour of their fundamental components, electrons and nudeL For heavy atoms and molecules containing them, the electrons can move at speeds which represent a substantial fraction of the speed of light, and thus relativity must be taken into account. Relativistic quantum mechanics therefore provides the basic formalism for calculating the properties of heavy-atom systems. The purpose of this book is to provide a detailed description of the...