Table of Contents
What is a good example of sublimation?
sublimation, in physics, conversion of a substance from the solid to the gaseous state without its becoming liquid. An example is the vaporization of frozen carbon dioxide (dry ice) at ordinary atmospheric pressure and temperature. Sublimation is the transition of a substance directly from the solid to the gaseous state on heating, without passing through the liquid state. Examples: Camphor, Iodine, Ammonium Chloride, Naphthalene, etc. Sublimation is a process used to isolate a -natural product from other undesired compounds, and then purify it by a direct phase change of that product from a solid to a vapor. Sexual sublimation was according to Freud a deflection of sexual instincts into non-sexual activity, based upon a principle akin to the conservation of energy in physics. There is a finite amount of activity, and it is converted, in a mechanistic fashion like a mechanical engine, from sexual activity to non-sexual.
Which technique is used for sublimation?
The sublimation method is a useful method for growing crystals from vapor, and it is called the physical vapor transport (PVT) method. In Fig. 20.12, raw materials are heated in a crucible or quartz tube and sublimated in the high-temperature zone, then transported to a seed crystal in the low temperature zone. Sublimation is the process in which a solid substance is directly converted into the gaseous state without passing through the liquid state. This process is used to separate a mixture containing a constituent that sublimes. Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor (gas) in the air without first melting into water. The opposite of sublimation is vapour deposition. The term sublimation only applies to a physical change of state and not to the transformation of a solid into a gas during a chemical reaction. One common example of sublimation is solid carbon dioxide, known as dry ice.