Our Scientific Encyclopedias
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Book Our Scientific Encyclopedias
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The book cannot be previewed or downloaded in order to preserve the copyright of the author and publishing house
Not available digitally or on paper through the Noor Library, it is for rating and review
Our Scientific Encyclopedias
| Author: | Muhammad Farhat |
| Category: | References, Encyclopedias, Atlases And Scientific Dictionaries [Edit] |
| Language: | Arabic |
| Publisher: | دار الكتاب الحديث |
| Release Date: | 01 Jan 2011 |
| Rank: | 230,046 No 1 most popular |
| Short link: | Copy |
| More books like this book | |
Book Description
من المحتمل أن العلم بدأ مع قيام الإنسان منذ أكثر من مليون سنة، بإلتقاط الحجارة لصناعة أدواته الحجرية الأولى، وكان الإنسان بذلك، يجرب أنواع مختلفة من الحجارة والصخور، فيختار أقواها وأشدها ويفضل بعضها على البعض الآخر.
ولعل هذه العملية، كانت إحدى الأسس الأولى التي إعتمدها الإنسان لإختيار الأفضل من الصخور، وفقاً لسلسة من الإختيارات العفوية والطويلة والقائمة على الخطأ والصواب؛ فيتفحص الحجارة والصخور، ثم يختار الأفضل بصورة دائمة ومتكررة لتأتي معداته في مرحلة ما. أقوى من مرحلة أخرى. وهذا بالتحديد ما يفعله علماء المواد في أيامنا هذه، إجراء التجارب، ثم، إعتماد التركيب المعدني الأفضل، وفي النهاية، إعداده لتلبية حاجات الصناعات المعينة...
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Not available digitally or on paper through the Noor Library, it is for rating and review
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