مصادر الكيمياء موقع لتعليم الكيمياء بصورة مبسطة
A low-density porous transparent material that consists of more than 90% air. Usually based on metal oxides or silica, aerogels are used as drying agents and insulators.
أكمل القراءة »
A low-density porous transparent material that consists of more than 90% air. Usually based on metal oxides or silica, aerogels are used as drying agents and insulators.
أكمل القراءة »