Catalog > Sains > Umum > د.محمود الشواربي: الذرة في خدمة الزراعة (ePUB)

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

Sokongan

perlindungan daripada 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

Beli ebook ini dan dapatkan 1 lagi PERCUMA!

Bahasa Arab ● Format EPUB ● Halaman-halaman 91 ● ISBN 9785269618487 ● Saiz fail 0.8 MB ● Umur 99-17 tahun ● Penerbit وكالة الصحافة العربية ● Bandar raya London ● Negara GB ● Diterbitkan 2024 ● Muat turun 24 bulan ● Mata wang EUR ● ID 10089033 ● Salin perlindungan Social DRM

Lebih banyak ebook daripada pengarang yang sama / Penyunting

Arabookverse د. محمود الشواربي

90,365 Ebooks dalam kategori ini

perlindungan daripada Sergiusz Trzeciak: Poland''s EU Accession

Sergiusz Trzeciak: Poland”s EU Accession

This book examines the process of Poland’s accession negotiations to the European Union between 1998-2003. An empirical study based on Robert Putnam’s two-level game model, it charts the influence an …

perlindungan daripada Hossein Bashiriyeh: The State and Revolution in Iran (RLE Iran D)

Hossein Bashiriyeh: The State and Revolution in Iran (RLE Iran D)

This book analyses the distant and proximate causes of the 1978 revolution in Iran as well as the dynamics of power which it set in motion. The volume explains the complex and far-reaching processes …

perlindungan daripada Gil Loescher & James Milner: Protracted Refugee Situations

Gil Loescher & James Milner: Protracted Refugee Situations

Protracted refugee populations not only constitute over 70% of the world”s refugees but are also a principal source of many of the irregular movements of people around the world today. The long-term …

perlindungan daripada Wendy Sinclair-Brull: Female Ascetics

Wendy Sinclair-Brull: Female Ascetics

This book examines in rich detail the neglected topic of female ascetics. Based on field research, it documents the social forces which facilitated the establishment of an Order of Ascetics for women …

perlindungan daripada Heidi Rika Maria Pauwels: Krsna''s Round Dance Reconsidered

Heidi Rika Maria Pauwels: Krsna”s Round Dance Reconsidered

Concerned with the process in Hinduism of reinterpreting classical texts and imbuing them with new inspiration. An example par excellence is Hariram Vyas”s Ras-pancadhyayi, the earliest known Braj B …

perlindungan daripada Martin A. (Simon Fraser University, Canada) Andresen: The Science of Crime Measurement

Martin A. (Simon Fraser University, Canada) Andresen: The Science of Crime Measurement

Crime statistics are ubiquitous in modern society – but how accurate are they? This book investigates the science of crime measurement focussing on four main questions: how do we count crime? How do …

perlindungan daripada Carolyn Mackelcan Morell: Unwomanly Conduct

Carolyn Mackelcan Morell: Unwomanly Conduct

Provocative study of women who chose to be childless based on extensive interviews with women aged between 40 and 78. A significant contribution to debates about choice, the private and the public, g …

perlindungan daripada Ari-Veikko Anttiroiko: The Political Economy of City Branding

Ari-Veikko Anttiroiko: The Political Economy of City Branding

Globalization affects urban communities in many ways. One of its manifestations is increased intercity competition, which compels cities to increase their attractiveness in terms of capital, entrepre …

perlindungan daripada Carl Death & Clive Gabay: Critical Perspectives on African Politics

Carl Death & Clive Gabay: Critical Perspectives on African Politics

Strong states and strong civil societies are now increasingly hailed as the twin drivers of a ‘rising Africa’. Current attempts to support growth and democracy are part of a longer history of promoti …

perlindungan daripada Gabriella (Kent State University, USA) Paar-Jakli: Networked Governance and Transatlantic Relations

Gabriella (Kent State University, USA) Paar-Jakli: Networked Governance and Transatlantic Relations

In today’s complex and interconnected world, scholars of international relations seek to better understand challenges spurred by intensified global communication and interaction. The complex connecte …

Muka surat seterusnya >>>