How small insects fly?

How small insects fly?

It is widely acknowledged that the flight principle of biological flapping wings (birds, bats and insects) is different from the one of the fixed wings (flight vehicles). For a cruising aeroplane, gases around the wings can be simplified to the...

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Droplets and optics

I thought I will mention something about perhaps, the less talked about aspect of droplets, which is its optical properties. Ever since the modern understanding of light and a sound explanation of  the rainbow from an optics point of view...

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Magic (?) Ball

Magic (?) Ball

A few nights ago Ernest (my two year old son) and I made a discovery that could have potentially revolutionary impact on the field of fluid dynamics; at bath time.  One of his balls had wandered under the running tap… and, as if by magic...

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