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Date: 17-1-2018
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Date: 14-5-2020
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Date: 23-3-2017
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Carbon nanotubes
Carbon nanotubes were discovered in 1991 and consist of elongated cages, best thought of as rolled graphite-like sheets, i.e. in contrast to the fullerenes, nanotubes consist of networks of fused 6-membered rings. Nanotubes are very flexible and have great potential in materials science. As a result, research in this area is a ‘hot topic’ but is beyond the scope of this book; the end-of-chapter reading list provides an entry into the area.
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هل يمكن للدماغ البشري التنبؤ بالمستقبل أثناء النوم؟
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علماء: طول الأيام على الأرض يزداد بسبب النواة الداخلية
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قسم الشؤون الطبية: خطّة يوم عرفة وعيد الأضحى سارت بانسيابيةٍ عالية
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