●Window
There is role of windows variously.The role of windows changes with climates of areas. Since, the four seasons of Japan has clarified, the role of a window is various. The window of a cold district is small and its wall is large. Because, the glass of a window tends to conduct heat. It is a large material of heat loss.
In recent years, People asked for pleasure. Consequently, in order to solve this heat loss, it has covered by using energy in large quantities.It has become difficult for today's human-beings society to make it already maintain in environment.For environment that a window is asked only "area become small"or"a performance is improved". Energy saving was considered in the United States and there was actually motion that window area would be restricted legally in the 1970s.If a window is made small, it will lead to energy saving. However, don't forget that a window is also equipment which feels nature. A window is important environmental equipment now which must become sensitive to environment.
On the technology of the glass which considered the thing of environment, it investigated what thing there is.
