Monthly Archives: October 2012

Measuring Viscosity

This exercise uses one of the oldest and easiest ways, but not the most accurate: we will simply see how fast a steel sphere falls at terminal velocity through a fluid. The faster the sphere falls, the lower the viscosity. … Continue reading

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Turbulent Flow and Viscosity

Read the post on Laminar Flow first. When we think about this, it’s often useful to compare the two types together and the textbook might have a diagram in it like this. The arrowed lines represent the trajectories of particular molecules. … Continue reading

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Laminar Flow

Lamina is the Latin word for sheet – like a flat sheet of paper. Imagine fanning a ream or thick pile of printer paper by rolling circles with your knuckle on the top sheet. All the sheets move a little … Continue reading

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Measuring Young’s Modulus (2). Properly

Read previous post first to refresh your memory. At AS, it’s a well-known experiment to measure the Young Modulus of a material like copper which is quite stretchy (k= small, in other words). To help us, everything in blue is … Continue reading

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Young’s Modulus Basics

In just the same way as resistance applies to a particular object or device, resistivity refers to the material from which the object is made. So, everybody knows Hooke’s Law – the law of springs refers to a particular spring, … Continue reading

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