The Basics About the Rockwell Hardness Test. Simply put, the Rockwell hardness test is a method of measuring the hardness of materials. The Rockwell hardness scale is typically administered to characterize the hardness of metals, such as thin steel, cemented carbides, lead, aluminum, zinc, copper alloys, titanium and iron.
Apache Camel is an open source Java framework that focuses on making integration easier and more accessible to developers. Figure 1 shows how these three items actually map to Camel concepts. To give you a good understanding of how Camel is organized, we will discuss Components, Endpoints, Processors, and DSLs.
Native American Legends. Apache Tear Drop. An Apache / Jicarilla Legend. Apache Tear Drop is a form of black obsidian. It is a calming translucent stone, found in Arizona and other parts of the U.S. It is composed of feldspar, hornblende, biotite and quartz.