Chromatic Aberration – what is it?

View Chromatic Aberration – what is it?

And how to reduce it, and get the sharpest images possible. White light is made up of a complete spectrum of different wavelengths of light. The visible wavelengths range from 400 nano-metres (violet) to 700nm (red). When a simple lens focuses light, the different wavelengths are focused at slightly different distances. In a photograph, this would…

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Specifying a high speed camera for a microscope

View Specifying a high speed camera for a microscope

Most high speed cameras can be fitted to a microscope with the use of a C-mount adapter, but what makes some cameras more suitable than others? Firstly, the physical size/ shape. Does the camera fit without binding on the body of the microscope, and is it small enough to be supported just by the C-mount without…

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Particle Image Velocimetry – see the flow

View Particle Image Velocimetry – see the flow

Particle Image Velocimetry (PIV) is an optical method of flow visualisation, where particles are tracked, to form a vector diagram, showing the flow pattern and flow rates of a fluid. It is generally carried out in 2D, but 3D PIV is a powerful tool for more advanced users. PIV can be carried out in liquids…

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