Tag: medieval

 Associate Professor Zhu Huai Yong, from Queensland University of Technology’s School of Physical and Chemical Sciences, said that church windows stained with gold paint purify the air when they are lit up by sunlight.

Scientists have discovered that, in medieval churches, stained glass windows painted with gold purify the air when heated by the sun. The researchers hope that this discovery could also be used for modern technologies, since the chemical reaction involved is very energy-efficient.

Continue reading… “Gold Stained Glass Windows An Early Air Purifier”