Talk:Premelting

This doesn't seem to be right[edit]

"Premelting shows its effects in e.g. frost heave the growth of snowflakes and, taking grain boundary interfaces into account, maybe even in the movement of glaciers."

FX (talk) 19:09, 24 January 2009 (UTC)[reply]

there was another mistake:

γ1 − 2 < γ1 − l + γl − 2 this equation means that the energy of the (1-2)-interface is lower than the energy of the (1-l-2)-interface. but since the system will adopt the lowest surface energy, there eould be no premelting. in the context of the text, the equation has to be

γ1 − 2 > γ1 − l + γl − 2

this is stated in [1] (see literature in the artile). —Preceding unsigned comment added by 129.13.72.198 (talk) 09:08, 7 September 2010 (UTC)[reply]

Limitations of theory[edit]

Melting can begin from the interior in the case of absorbed radiative energy, especially if it is focused within an object but not focused at the surface of the object. Consider ice under a lens in sunlight, or ice stimulated by focused ultrasound.

Another object that can melt from within, without external "tampering" such as applying focused energy, is a large enough piece of something that releases its own energy constantly, such as a radioactive metal. In this case, the outside will be the coolest portion by a significant factor.

I get the feeling this article was written as if anything Faraday said must be some sort of gospel that can be applied to every aspect of everything, instead of only to the actual situations that Faraday said were valid.. this is, unfortunately, all too common with presenting science to the public. Zaphraud (talk) 22:56, 5 September 2012 (UTC)[reply]

There is a contradiction[edit]

The introduction states that premelting results in a "quasi-liquid" film on the surface of a solid.

However, the "Ice skating" section talks about there being a thin film of water present. It states that, "due to premelting effects there is always a thin film of liquid water on the ice surface".

This is a contradiction because the introduction states that premelting results in a quasi-liquid film, while the ice skating section says that it's a liquid water film. Hb2007 (talk) 21:36, 4 November 2020 (UTC)[reply]