For most lower level, non-professional research, a general database will cover most of what you need, including the basics of a topic and the latest developments.
For more scholarly, upper level research, you will want to use our subject specific databases. Try searching in a database that covers only the fields you're interested in. Many physics-related databases can be found in the following section.
Many of our physics journals are indexed by their publisher. Begin with these databases for full text articles.