Catalog > Sciences > General > د.محمود الشواربي: الذرة في خدمة الزراعة (ePUB)

د.محمود الشواربي
الذرة في خدمة الزراعة [EPUB ebook]

Support

Cover of د.محمود الشواربي: الذرة في خدمة الزراعة (ePUB)

تتكون المواد من جزيئات، وتتكون الجزيئات من عناصر، والعناصر من ذرات، وعلى هذا يمكن القول بأن الذرة هي وحدة العنصر ، وتتكون الذرة من نواة ( ( Nucleusيتركز فيها وزن الذرة، ويدور حول هذه النواة في محيطات خارجية عدد من الإلكترونات، التي يعتبر وزنها ضئيلا جدا بالنسبة إلى وزن نواة الذرة، وهذه الإلكترونات جميعا محملة بشحنة سالبة.
وتتكون نواة الذرة من عدد من البروتونات ( (Protons) وعدد من النيوترونات (Neutrons ) والبروتون هو جسيم صغير ثقيل نسبيا، محمَل بشحنة كهربائية موجبة، وأما النيوترون فيبلغ وزنه تقريبا وزن البروتون وهو متعادل كهربائياً، وذرة الأيدروجين تعتبر أبسط الذرات، وتتكون من بروتون واحد، وفي محيطها الخارجي إلكترون واحد.

€2.99

Buy this ebook and get 1 more FREE!

Language Arabic ● Format EPUB ● Pages 91 ● ISBN 9785269618487 ● File size 0.8 MB ● Age 99-17 years ● Publisher وكالة الصحافة العربية ● City London ● Country GB ● Published 2024 ● Downloadable 24 months ● Currency EUR ● ID 10089033 ● Copy protection Social DRM

More ebooks from the same author(s) / Editor

Arabookverse د. محمود الشواربي

90,431 Ebooks in this category

Cover of Lawrence Murphy: Perverts by Official Order

Lawrence Murphy: Perverts by Official Order

This candid book documents for the first time the U.S. Navy’s use of entrapment in pursuit of homosexuals in and around Newport, Rhode Island, during the early twentieth century. This most extensive …

Cover of Haim Yacobi: Israel and Africa

Haim Yacobi: Israel and Africa

Israel and Africa critically examines the ways in which Africa – as a geopolitical entity – is socially manufactured, collectively imagined but also culturally denied in Israeli politics. Its unique …

Cover of Peter Berggren & Staffan Nahlinder: Assessing Command and Control Effectiveness

Peter Berggren & Staffan Nahlinder: Assessing Command and Control Effectiveness

Assessing Command and Control Effectiveness: Dealing with a Changing World offers a description of the current state of Command and Control (C2) research in imperfect settings, showing how a research …

Cover of Maryanne Kelton: ''More than an Ally''?

Maryanne Kelton: ”More than an Ally”?

With the ascendancy of the Coalition government in 1996 there was a marked shift of emphasis directed to deepening Australia”s relations with America. The Coalition government strategically linked s …

Cover of Ronald V. Bettig: Copyrighting Culture

Ronald V. Bettig: Copyrighting Culture

Launching into a complete analysis of copyright law in our capitalistic and hegemonistic political system, Ronald Bettig uncovers the power of the wealthy few to expand their fortunes through the own …

Cover of Max Hanska: Communication Against Domination

Max Hanska: Communication Against Domination

This book tackles the philosophical challenge of bridging the gap between empirical research into communication and information technology, and normative questions of justice and how we ought to comm …

Cover of Adam (Slovak Academy of Sciences) Hudek & Michal (Czech Academy of Sciences) Kopecek: Czechoslovakism

Adam (Slovak Academy of Sciences) Hudek & Michal (Czech Academy of Sciences) Kopecek: Czechoslovakism

This collection systematically approaches the concept of Czechoslovakism and its historical progression, covering the time span from the mid-nineteenth century to Czechoslovakia’s dissolution in 1992 …

Cover of Gemma Houldey: The Vulnerable Humanitarian

Gemma Houldey: The Vulnerable Humanitarian

The Vulnerable Humanitarian challenges the prevalence of stress and burnout culture within the aid sector, laying bare the issues of power, agency, security and wellbeing that continue to trouble org …

Cover of Steven (Author) Falk: Field Guide to the Bees of Great Britain and Ireland

Steven (Author) Falk: Field Guide to the Bees of Great Britain and Ireland

Bees are a fascinating and indispensable group of insects, but many species are in decline, and efforts to help determine distributions and changes in abundance have to date been compromised by a ser …

Cover of Aly Khorshid: Islamic Insurance

Aly Khorshid: Islamic Insurance

Some Muslims believe insurance is unnecessary, as society should help its victims. Muslims can no longer ignore the fact that they live, trade and communicate with open global systems, and they can n …