The best results are obtained from a mixture of 99 parts thoria and 1 part ceria.
A mantle made with thoria alone gives practically no light.
Another method of making the mantle was first to produce a basis of thoria, and, having got the fabric in thorium oxide, to coat it with a mixture of 99% thoria and 1% ceria.
In the Voelker mantle a basis of thoria was produced, and was then coated by dipping in a substance termed by the patentee "Voelkerite," a body made by fusing together a number of oxides in the electric furnace.
With thoria the shrinkage is smaller than with any other known substance, and it possesses very high refractory powers.
Later it was discovered that pure thoria emits very little light by itself, although it possesses a refractory nature that gives a stability to the mantle unequalled by any other material as yet discovered.
Thoria which has been ignited is not readily soluble in acids.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "thoria" in a variety of sentences. We hope that you will now be able to make sentences using this word.
