dermatologist(n.) One who discourses on the skin and its diseases; one versed in dermatology; especially, a physician with specialized training in dermatology, licensed to practise as a specialist in treating diseases of the skin.
Melting Point: Everyday and Scientific Definitions. Now that we know something about phase diagrams, it will make more sense why scientists define melting point the way they do. First, in everyday terms, the melting point is the temperature at which a substance melts or freezes.
Freezing, or solidification, is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point. For most substances, the melting and freezing points are the same temperature; however, certain substances possess differing solidâliquid transition temperatures.he melting point of water at 1 atmosphere of pressure is very close to 0 Â°C (32 Â°F, 273.15 K), and in the presence of nucleating substances the freezing point of water is close to the melting point, but in the absence of nucleators water can super cool to â40 Â°C (â40 Â°F, 233 K) before freezing.