Clay glossary

Ειδικά | Α | Β | Γ | Δ | Ε | Ζ | Η | Θ | Ι | Κ | Λ | Μ | Ν | Ξ | Ο | Π | Ρ | Σ | Τ | Υ | Φ | Χ | Ψ | Ω | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ΟΛΑ

---

Tailings The residue of a material that will not pass through a sieve. It may be further processed and then re-sieved.

Tenmoku A stoneware glaze deeply coloured by iron oxide. It produces often lustrous results that vary in colour from yellow, green, rust red, brown and black.

Tensile Strength The resistance of a material to being torn apart by tension or pulling.

Thermal Conductivity The rate at which heat passes through a material as measured by its rise in temperature.

Thermal Shock Thermal shock is the way in which some materials are prone to damage by stresses set up due to differences in temperature in different parts of the article.

Thermocouple A device for the measurement of temperature based on the voltage generated when two dissimilar conductors are heated in contact e.g. copper/constantan, chrome/alumel, platinum/rhodium, etc.

Thixotropy The ability of certain clay suspensions to thicken up on standing; characteristic of partial or over-deflocculated casting slip.

Throwing The technique of forming pottery on the potter’s wheel. A ball of prepared clay is thrown on the wheel and it is centred and shaped with the hands.

Towing The process of smoothing the outer edge of greenware. It is very similar to fettling.

True Porosity The sum of open pores as determined by water absorption plus the volume of those pores which are sealed by vitreous matter and therefore closed to water.

---