2000 Volume 12 Issue 3 Pages 350-351
In the forest or near the waterfall, people feel refreshing or so good. Recently, a part of scientist tries to solve the fact. As one theory, this matter is caused by a minus ion. It is said that minus ion is made by garnet system ceramics as used jewel. Then if the Garnet is mixed with paint or wall materials, people will be able to lead in comfort. And we experiment ammonia gas adsorption characteristic of garnet system ceramics for us to get the bottom of the fact.