Carl Pulfrich and One of His Most Celebrated Instruments
Do you recognise this device? It is the Pulfrich Universal Refractometer, an instrument designed to measure the refractive index of both solid and liquid materials. This property is of great significance, for every substance allows light to pass through it at different velocities; the refractive index thus constitutes a distinctive hallmark of the material itself. Should you wish to learn more about its operation and about its distinguished inventor, we invite you to follow us here.
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