كيف استعمل العرب قديما الفضة لتنقية الماء؟

23 أبريل 2013

تتميز الفضة بقدرتها الفائقة على قتل البكتريا والكائنات الدقيقة والطحالب لذلك استخدمها العرب في تنقية الماء، حيث كانت الماء توضع في القرب المصنوعة من جلد الشاة ويملأ
مايقرب من ثلاثة أرباعها بالماء والباقي هواء، ويوضع في الماء قطع معدنية من عملات الفضة وفي أثناء الرحلات طويلة المسافات تهتز القربة فتحتك القطع ببعضها البعض مما ينتج عنه ذوبان جزء بسيط من الفضة في الماء في صورة مسحوق فائق النعومة يؤدي إلى قتل البكتريا وتطهير الماء.

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