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The electromagnetic spectrum. The essential parts of a spectrometer. How the emission spectrum of atomic hydrogen can be recorded. The relationships between the lines of the hydrogen spectrum. How each line...
Shows how the batching operations are carried out on a site using a medium sized reversing drum mixer. It starts by examining the materials and equipment that will be used; it goes on to show how the...
Shows the operation of various types of mixer, and explains how to achieve workability and strength in the concrete during the mixing process.
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