Yule-Nielsen Correction Factor - "N" Factor

For plate measurement, the geometrical dot size is what is important. Therefore, the light trap effect, or optical gain, must be factored out by using the Yule-Nielsen formula for the calculation of the dot area.

You can switch off the Yule-Nielsen-correction by setting the Y-N-coefficient to 1.0. In this case you are actually using the Murray-Davies formula.

You may also wish to consider using a video based plate reading device, such as the PlateScope.

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