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Download the file enwiki-YYYYMMDD-pages-articles.xml.bz2 from the most recent dump. For example, on your.org, go to directory YYYYMMDD for the most recent date (for example 20171020), and retrieve the requested file (for example enwiki-20171020-pages-articles.xml.bz2). Create a command file, for example ListCheckWiki111.txt with the following ...
Comparing a ruby laser that operates at 694.3 nm to a hypothetical soft X-ray laser that might operate at 1 nm, this means the X-ray transition is 694 3, or a little over 334 million times less likely. To provide the same total output energy, one needs a similar increase in input energy.