Dryness in the mouth can also be due to a change in the composition of saliva or reduced salivary flow in the mouth. Medically, dry mouth is also known as xerostomia. There are a few home remedies to prevent dry mouth. These dry mouth home remedies need to be used on a daily basis to help ward off the problem. Pregnant women and the elderly too face dry mouth along with bad breath. This too can be treated with the home remedies. Take a look.
If you heat the glass uniformly and quench the glass uniformly, you have no iridescence. However, that is only theoretical with heat-treated tempered glass. People tend to think that iridescence is caused only by the quench. Surprisingly, the worst iridescence examples usually are caused in the heating section.
This is related to the glass transition temperature, which is the temperature where an amorphous solid becomes soft near its melting point or a liquid becomes brittle near its freezing point. Most glass you encounter is silicate glass, which consists mainly of silica or silicon dioxide, SiO 2. This is the type of glass you find in windows and drinking glasses. The crystalline form of this mineral is quartz. When the solid material is non-crystalline, it is a glass. You can make glass by melting silica-based sand. Natural forms of silicate glass also exist. Impurities or additional elements and compounds added to the silicate change the color and other properties of the glass.