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Introducing vectors for engineering applications

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Figure 1(a) A model vector field created by a bar magnet. The opposite charges at each pole of the magnet creates a magnetic field around the magnet; Figure 1(b) A model of a vector field created by flow around a cylinder. The field flows around the cylinder and a colour bar indicates that regions of high pressure exist around the cylinder. After flowing around the cylinder, the vector field returns to a steady state.