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2. Coefficient of restitution - Wikipedia

   en.wikipedia.org/wiki/Coefficient_of_restitution

   A rubber ball will bounce better off concrete than a glass ball, but the COR of glass-on-glass is a lot higher than rubber-on-rubber because some of the energy in rubber is lost to heat when it is compressed. When a rubber ball collides with a glass ball, the COR will depend entirely on the rubber.

3. List of moments of inertia - Wikipedia

   en.wikipedia.org/wiki/List_of_moments_of_inertia

   Moment of inertia, denoted by I, measures the extent to which an object resists rotational acceleration about a particular axis; it is the rotational analogue to mass (which determines an object's resistance to linear acceleration).

4. Soda–lime glass - Wikipedia

   en.wikipedia.org/wiki/Soda–lime_glass

   The manufacturing process for soda–lime glass consists in melting the raw materials, which are the silica, soda, lime (in the form of (Ca(OH) 2), dolomite (CaMg(CO 3) 2, which provides the magnesium oxide), and aluminium oxide; along with small quantities of fining agents (e.g., sodium sulfate (Na 2 SO 4), sodium chloride (NaCl), etc.) in a glass furnace at temperatures locally up to 1675 ...

5. Volcanic glass - Wikipedia

   en.wikipedia.org/wiki/Volcanic_glass

   The glass transition temperature of basalt is about 700 °C (1,292 °F). [4] The mechanisms controlling formation of volcanic glass are further illustrated by the two forms of basaltic glass, tachylite and sideromelane. Tachylite is opaque to transmitted light because of the abundance of tiny oxide mineral crystals suspended in the glass ...

6. Kanzashi - Wikipedia

   en.wikipedia.org/wiki/Kanzashi

   A modern tsumami kanzashi set of the type worn by maiko (apprentice geisha) for the month of January. Kanzashi are hair ornaments used in traditional Japanese hairstyles.The term kanzashi refers to a wide variety of accessories, including long, rigid hairpins, barrettes, fabric flowers and fabric hair ties.

7. Glass transition - Wikipedia

   en.wikipedia.org/wiki/Glass_transition

   An amorphous solid that exhibits a glass transition is called a glass. The reverse transition, achieved by supercooling a viscous liquid into the glass state, is called vitrification . The glass-transition temperature T g of a material characterizes the range of temperatures over which this glass transition occurs (as an experimental definition ...