This paper attempts to verify the statistical correctness of contact angle measurements performed using the sessile drop method on a UDPZ device, utilizing coatings applied via the Arc-PVD method at ITeE-PIB for selected model liquids. The analysis results in a series of conclusions regarding both the design of the measuring apparatus (e.g., increasing image resolution, automating measurement and image selection) and the organization of measurements, such as increasing and standardizing the number of measurements, rigorous testing of coating uniformity, and systematizing data recording to enable broad statistical analysis – e.g. randomness of results – and its automation. Statistical apparatus is widely used in science, as well as in technology, business, medicine, etc. Depending on the field in which it is applied, different apparatus is used (partially) and different goals are set. Measurement theory (and in particular error theory) is based on statistics; currently, validation procedures widely used in research laboratories are based on statistics. (…)
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Source: Logistyka Magazine