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家里的玻璃窗常常附有许多灰尘,内表面我们可用抹布擦干净,但如果住在楼上,手臂长有限,常没法擦到玻璃的外面.买些长把手的刷子,用起来仍不方便.学习了电磁学知识后,小雪决定利用异名磁极相吸引的性质做一个双面擦窗刷.制作器材:两块擦玻璃的方形抹布(内有多层纱网)、两块塑料片(比抹布略小)、2m长细绳一根、手机套上的圆形薄磁铁若干(可在市场上购买)、万能胶、剪刀、针线.
The windows in the house are often covered with dust, and the inner surface can be cleaned with a rag but if you stay upstairs and your arms are limited, you often can not rub it outside the glass. It is still not convenient to buy long handle brushes After learning about electromagnetics, the snow decided to make use of the attractive nature of the dissimilar poles to make a double-sided window brush.Construction equipment: two glass-lined square rags (with multi-layer gauzes), two plastic sheets Slightly smaller than the cloth), a string of 2m long, a number of round thin magnets on the phone (available on the market), all-purpose adhesive, scissors and needlework.