Fluids

flight simulator

Introduction to Pitot-Static Systems in Gliders

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Introduction Like many others, I have been seeking new and fun things to do during a pandemic.   I decided on the new Microsoft Flight Simulator 2020,…
fluid dynamics experiment

Video Analysis of Spheres Falling Through Two Liquids

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Introduction Providing accurate fluid-dynamics experiments for undergraduate laboratories is challenging in several ways, including reproducibility, simplicity,…
Bernoulli's equation

Demystifying the Often Misunderstood Bernoulli’s Equation

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Introduction Bernoulli's equation is one of the most useful equations in the field of fluid mechanics, owing to its simplicity and broad applicability.…
carcapacity

Why Road Capacity Is Almost Independent of the Speed Limit

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Introduction Let us start with a familiar situation. Take a familiar part of a road, for example, the one from your home to work. How long will it take…
buoyancy

Understanding Buoyancy: The Limits of Archimedes

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It’s a principle as old as science itself, and remarkably, remains essentially unchanged in the light of revolution after revolution in our understanding…
airplanelift

How Does an Airplane Wing Work? A Primer on Lift

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Many people ask how an airplane wing works, and several answers are commonly given. You might have even seen vigorous arguments between proponents…
bubbles

Explosion-Generated Collapsing Vacuum Bubbles Reach 20,000 Kelvin

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Experiment overview In a recent paper published in Physical Review Letters (PRL), one of the top physics journals, Jérôme Duplat and Emmanuel Villermaux…
hydrostatics

Frequently Made Errors in Mechanics: Hydrostatics

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  1. Archimedes' Principle X "When a body is placed in a liquid, the weight of the body equals the weight of the liquid displaced"That will…