Atomic energy in cosmic and human life;: Fifty years of by George Gamow

By George Gamow

First released in 1945, within the aftermath of the bombing of Hiroshima and Nagasaki, Atomic power in Cosmic and Human existence bargains a special account of the matter of atomic power and the underlying ideas of radioactive decay. Written by way of the pre-eminent physicist George Gamow, and devoted to the wish of lasting peace, the booklet used to be initially designed to offer an entire photograph of what atomic power is, the place it comes from, and the way it may be used for higher or worse. that includes a couple of graphs and illustrations by means of the writer himself, this small quantity will remain of price to these attracted to the heritage of the research of radioactivity.

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Assuming your project is sufficiently complex, you'll discover that it's sometimes nice to forcibly “backdate” portions of your working copy to an earlier revision; you'll learn how to do that in Chapter 3. Perhaps you'd like to test an earlier version of a sub-module, contained in a subdirectory, or perhaps you'd like to examine a number of previous versions of a file in the context of the latest tree. However you make use of mixed-revisions in your working copy, there are limitations to this flexibility.

While this is most likely the very first thing you will do when you set up your Subversion server, it's not something that happens very often. For a detailed description of import, see the section called “svn import” later in this chapter. Revisions: Numbers, Keywords, and Dates, Oh My! Before we go on, you should know a bit about how to identify a particular revision in your repository. As you learned in the section called “Revisions”, a revision is a “snapshot” of the repository at a particular moment in time.

A repository location, however, is always a URL. Table 2-1 describes how different URL schemas map to the available access methods. 1. Repository Access URLs Schema Access Method file:/// direct repository access (on local disk) http:// access via WebDAV protocol to Subversion-aware Apache server https:// same as http://, but with SSL encryption. svn:// access via custom protocol to an svnserve server svn+ssh:// same as svn://, but through an SSH tunnel. For more information on how Subversion parses URLs, see the section called “Subversion Repository URLs”.

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