Physics is one of the four science subjects in the syllabus. This subject primarily deals with the laws and rules governing the universe. In a way, this is the deepest part of the educational system. There are various physics textbooks available in the market. If you want to buy one then the best option would be to visit the websites of online bookstores. You can choose among the different styles of the textbooks as well as from among the different types of books. The designs, fonts, cover and content of the textbooks vary.
The physical world is made up of the forces and particles that operate and interact through chemical reactions and interactions between atoms and molecules. It is a fact that the forces govern the particles govern the forces. An important part of physics is the understanding of the electron as well as the nucleus. There are two types of the nuclei in nature namely, the positron and the electron. The electron occupies the lowest level in a structure while the positron occupies the highest level. The electrons and positrons are both non-radiative particles, while the protons are always radioactive.
Matter consists of atoms, which act as units of energy. Molecules are the functional groups of atoms which make up the matter. There are different types of matter, such as solid, liquid, gas, plasma. Solid matter is composed of atoms and the atoms consist of hydrogen, carbon, oxygen, nitrogen, and phosphorous. Liquid is composed of water and the atoms of these elements are large. The gases consist of carbon dioxide, nitrogen and oxygen. The plasma consists of hydrogen ions, electrons and free electrons.