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Encyclopedia Britannica - Main :: RAY-RHU |
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RELATION OF SURFACE-TENSION TO TEMPERATURE It appears from the experiments of Brunner
Wolf
ascent of water in tubes that at the temperature I centigrade T =752o (1-0.001870 ( Brunner
=76o8 (1ooo2t+0.0000041512), for a tube 02346 cm. diameter (Wolf
=77.34(1o.00l8it), for a tube 03o98 cm. diameter (Wolf).Lord Kelvin has applied the principles of Thermodynamics to determine the thermal effects of increasing or diminishing the area of the free surface of a liquid, and has shown that in order to keep the temperature constant
275 to the liquid which is dynamically equivalent to the product of the absolute temperature into the decrement of the surface-tension per degree of temperature. We may call
It appears from the experiments of C. Brunner and C. J. E. Wolf that at ordinary temperatures the latent heat of extension of the surface of water is dynamically equivalent to about half the mechanical work
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