Veden pintajännityksen toteaminen 21915633876202751171534581568499431581

Tiputtamalla tippa laimentamatonta astianpesuainetta nähdään pintakalvon vetäytyminen.

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Veden käsitekartta

Vahvan astianpesuaineen vaikutus veden pintajännitykseen.

Astiaan on ripoteltu ohut kerros esim. kanelia, jotta veden pintakalvo erottuisi. Tiputtamalla tippa laimentamatonta astianpesuainetta nähdään pintakalvon vetäytyminen. Pintajännityskalvon repeytymisen muoto riippuu siitä kuinka tasaisesti kanelia on ripoteltu.