SCIENCE|natural and applied sciences|physical sciences|chemistry
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- Plattenmethode
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- Definition Verfahren zur Messung der Oberflächenspannung, bei dem die Flüssigkeit angehoben wird, bis der Kontakt der Oberfläche bzw. Grenzfläche mit der Platte registriert wird Reference auf der Grundlage von KRÜSS GmbH, "Oberflächenspannung : Plattenmethode", Krüss GmbH, Hamburg, ca. 2010, http://www.kruss.de/theorie/messungen/oberflaechenspannung/plattenmethode.html (17.08.2010)
- plate method
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- Definition the liquid is raised until the contact between the surface or interface and the plate is registered. The maximum tension acts on the balance at this instant; this means that the sample does not need to be moved again during the measurement. The tension is calculated using the following equation: σ = F / L·cosθ where: σ = surface or interfacial tensionF = force acting on the balanceL = wetted lengthcosθ = contact angleThe plate is made of roughened platinum and is optimally wetted so that the contact angle θ is virtually 0°. This means that the term cosθ has a value of approximately 1, so that only the measured force and the length of the plate need to be taken into consideration Reference KRÜSS Advancing Surface Science: Plate Method http://www.kruss.de/en/theory/measurements/surface-tension/plate-method.html [3.12.2009]
- Comment Correction calculations are not necessary with the plate method.