Glass that changes color depending on the brightness of light. It is made by precipitating colloidal crystals of silver halide into alkali borosilicate glass. The crystals are microscopic, measuring several tens of angstroms, and exist about 500 angstroms apart. Light and heat cause the silver halide to dissociate and bond reversibly, causing it to become colored when exposed to light and to return to colorless when the light exposure is stopped. Used in sunglasses, etc. → Related topics Intelligent materials | New glass Source : Heibonsha Encyclopedia About MyPedia Information |
光の明るさにより色の変化するガラス。アルカリホウケイ酸ガラスにハロゲン化銀のコロイド状結晶を析出させて作る。結晶は数十オングストロームの微細結晶で,500オングストロームくらい離れて存在する。光や熱によってハロゲン化銀の解離・結合が可逆的に起こり,光が当たると着色し,光の照射をやめると無色に戻る。サングラスなどに実用。 →関連項目知能材料|ニューガラス 出典 株式会社平凡社百科事典マイペディアについて 情報 |
>>: Photogram - Fotogramm (English spelling) German
…In Japan, 10 species of the family Paralichthys ...
…Amid the trend of reexamination of modern Wester...
A city in the state of West Bengal in eastern Indi...
…James Bruce, a Scottish physician, discovered La...
...1612-75), and Rosa, who pioneered romantic lan...
… [Ancient times] A lower province belonging to t...
...At the end of World War II, before and after t...
Other nonmetallic minerals that are produced in l...
...The obiza is thought to have been established ...
A former town in Hioki District, in the western pa...
…the American Legion. It was organized among sold...
A soup made by boiling several ingredients such a...
A physician and a pioneer of the Koho school that...
A haiku poet from the mid-Edo period. His surname...
...About 5,000 people live in Bontoc, the provinc...