<Dd> P = 2 R γ, (\ displaystyle P = (\ frac (2) (R)) \ gamma,) </Dd> <P> which is equivalent to the Young--Laplace equation when R = R. For real soap bubbles, the pressure is doubled due to the presence of two interfaces, one inside and one outside . </P> <P> Surface tension is dependent on temperature . For that reason, when a value is given for the surface tension of an interface, temperature must be explicitly stated . The general trend is that surface tension decreases with the increase of temperature, reaching a value of 0 at the critical temperature . For further details see Eötvös rule . There are only empirical equations to relate surface tension and temperature: </P> <Ul> <Li> Eötvös: </Li> </Ul>

State the relationship between the surface tension and the temperature of water