All resources in Howard Community College

مقدمة في كيمياء الحالة الصلبة - المحاضرة 15 - مقدمة في الحالة الصلبة، نظم الكريستال السبعة، شبكات برافياس الأربعة عشر، خصائص البلورات المكعبية: المكعب البسيط، المكعب مركزي الوجه، المكعب مركزي الجسم، ومكعب الماس. تطبيقات: (1) المواد الإلكترونية: الترانزستورات، الصمامات، تقويم التيار؛ (2) المواد البلورية: تجميع القذائف، مد الأسطح ثنائية البعد، توصيل (تعشيق) الألياف البصرية ، مقسم الحزمة الضوئي، والذهب الملون

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لمحة عن المساق : يتضمن استكشاف العلاقة بين البنية الأساسية الإلكترونية، الروابط الكيميائية، والنظام الذري كما يتضمن البحث في الخصائص الكيميائية لـ"مجاميع من الجزيئات،" بما في ذلك البلورات، والمعادن، والزجاج، وأشباه الموصلات والمحاليل والتوازنات الحمضية القاعديّة، والبوليمرات، والمواد الحيوية. كذلك يتضمن المساق تطبيقات في المجال الصناعي، توليد وتخزين الطاقة،التكنولوجيات الناشئة، والأثر البيئي للمعالجة الكيميائية.

Material Type: Lecture

Author: شمسنا العربية

Introductory Chemistry- 1st Canadian Edition

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The goal of this textbook is not to make you an expert. True expertise in any field is a years-long endeavor. Here I will survey some of the basic topics of chemistry. This survey should give you enough knowledge to appreciate the impact of chemistry in everyday life and, if necessary, prepare you for additional instruction in chemistry. Throughout each chapter, I present two features that reinforce the theme of the textbook—that chemistry is all around you. The first is a feature titled, appropriately, “Chemistry Is Everywhere.” Chemistry Is Everywhere” focuses on the personal hygiene products that you may use every morning: toothpaste, soap, and shampoo, among others. These products are chemicals, aren’t they? Ever wonder about the chemical reactions that they undergo to give you clean and healthy teeth or shiny hair? I will explore some of these chemical reactions in future chapters. But this feature makes it clear that chemistry is, indeed, everywhere. The other feature focuses on chemistry that you likely indulge in every day: eating and drinking. In the “Food and Drink App,” I discuss how the chemistry of the chapter applies to things that you eat and drink every day. Carbonated beverages depend on the behavior of gases, foods contain acids and bases, and we actually eat certain rocks. (Can you guess which rocks without looking ahead?) Cooking, eating, drinking, and metabolism—we are involved with all these chemical processes all the time. These two features allow us to see the things we interact with every day in a new light—as chemistry.

Material Type: Textbook

Authors: David W. Ball, Jessie A. Key

Physics (PHYS 100 Non Science Majors)

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This is a course for non-science majors that is a survey of the central concepts in physics relating everyday experiences with the principles and laws in physics on a conceptual level. Upon successful completion of this course, students will be able to: Describe basic principles of motion and state the law of inertia; Predict the motion of an object by applying Newtonęs laws when given the mass, a force, the characteristics of motion and a duration of time; Summarize the law of conservation of energy and explain its importance as the fundamental principle of energy as a –law of nature”; Explain the use of the principle of Energy conservation when applied to simple energy transformation systems; Define the Conservation of Energy Law as the 1st Law of Thermodynamics and State 2nd Law of Thermodynamics in 3 ways; Outline the limitations and risks associated with current societal energy practices,and explore options for changes in energy policy for the next century and beyond; Describe physical aspects of waves and wave motion; and explain the production of electromagnetic waves, and distinguish between the different parts of the electromagnetic spectrum.

Material Type: Assessment, Full Course, Reading, Syllabus

Introduction To Astronomy (ASTR 101)

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This course provides an introduction to the universe beyond the Earth. We begin with a study of the night sky and the history of the science of astronomy. We then explore the various objects seen in the cosmos including the solar system, stars, galaxies, and the evolution of the universe itself. As an online course, it is equivalent to 6 lecture hours, and satisfies science requirements for the AA and AS degree. It is designed to be thorough enough to prepare you for more advanced work, while presenting the concepts to non-majors in a way that is meaningful and not overwhelming. We will consider the course a success if you have learned how to think about the universe critically in an organized, logical way, and to have enhanced your appreciation of the sky around us.

Material Type: Assessment, Full Course, Reading, Syllabus

Brainstorming

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This handout discusses techniques that will help you start writing a paper and continue writing through the challenges of the revising process. Brainstorming can help you choose a topic, develop an approach to a topic, or deepen your understanding of the topic’s potential.

Material Type: Reading