Throughout the three parts of a Journey into Modern Physics, references were made to internet web sites to provide an alternative description of a topic, or more detail, or both. 

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Over time, a small number of  web-sites listed might disappear or change, making the references used in the book invalid. The majority of the references used are listed in the following panels and by clicking on one of the descriptions you will be taken directly to the web-site. 

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Note that this section does not include video references which can be found on the VIDEO WALL. There is also an IMAGE WALL, displaying some of the images used in the books.