Qais Lectures in Physics
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There are many definitions of physics in standard textbooks. According to Wikipedia, “Physics is the natural science that studies the matter and its motion and behavior through space and time and that studies the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves”. However, physics is much more than this. Physics covers the entire universe, from quantum particles to supernovas, from spinning subatomic particles to spinning galaxies. If you take physics as a subject with exams and don’t love it, you will not be able to enjoy it. Nature can be understood within physics and mathematics frames. In addition, you should know that mathematics is an essential tool in studying physics. Mathematics is the language of physics. Physics is philosophy without mathematics. Therefore, early, when scientists didn’t apply mathematics to their theories, they were called Philosophers, not physicists.
Mechanics is generally taken to mean the study of the motion of objects (or their lack of motion) under the action of given forces. Classical mechanics is sometimes considered a branch of applied mathematics. It consists of kinematics, the description of motion, and dynamics, the study of the action of forces in producing either motion or static equilibrium.
These lectures are hand-writing. The final draft of classical mechanics will complete Soon !
Part III: Wave and Optics
Soon !
To the best of our knowledge, the universe is governed by four forces. Gravity is the dominant force at the largest scales. The two nuclear forces hold away at the very smallest distances. The electromagnetism applies to everything in between. Electromagnetism controls the interactions between atoms and molecules at the atomic level. Remarkably, four straightforward and sophisticated equations encompass the entire explanation of the force of electromagnetic. The Maxwell equations are the name given to this. This course aims to present the Maxwell equations and explore some of the several narratives they hold.
The goal of these lectures is to help you start to comprehend the quantum world and some of its strange behaviors. This is a bit of a step into the unknown, as should already be evident, and our classical intuition will not serve us well in the quantum world. Luckily for us, the language of mathematics describes the quantum world remarkably well for reasons that we still do not fully comprehend. Throughout these lectures, we will adopt an approach that embraces this mathematical description and uses it to develop a fresh sense of how the universe actually functions.
Part VI: Statistical Mechanics & Thermodynamics
Soon !
Solid state physics is the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy. It is the largest branch of condensed matter physics. Solid-state physics studies how the large-scale properties of solid materials result from their atomic-scale properties. Thus, solid-state physics forms a theoretical basis of materials science. It also has direct applications, for example in the technology of transistors and semiconductors.
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