Evaluation: Difference between revisions
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→Counts per mm2: Area |
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==Counts per mm<sup>2</sup>== | ==Counts per mm<sup>2</sup>== | ||
There are multiple situations where a finding will be quantified in terms of amount per mm<sup>2</sup>. To make such calculations, you need to know the size of the area you see in the microscope. It is usually possible to look up what theoretically would be the area, but the most reliable way of knowing is to use a calibration slide (basically a translucent ruler with 0.1 mm line resolution or smaller, which may cost about $15) to measure the diameter of your view. The area is then calculated as: | There are multiple situations where a finding will be quantified in terms of amount per mm<sup>2</sup>. To make such calculations, you need to know the size of the area you see in the microscope. It is usually possible to look up what theoretically would be the area, but the most reliable way of knowing is to use a calibration slide (basically a translucent ruler with 0.1 mm line resolution or smaller, which may cost about $15 if none of your colleagues has one to lend) to measure the diameter of your view. The area is then calculated as: | ||
*Area in mm<sup>2</sup> ≈ (diameter in mm)<sup>2</sup> x 0.79 | *Area in mm<sup>2</sup> ≈ (diameter in mm)<sup>2</sup> x 0.79 | ||