Victor Franz Hess was a physicist who discovered cosmic rays. Cosmic rays are protons and atomic nuclei with extraordinary energies that travel through space at almost the speed of light. They come from the Sun, galaxies outside the Solar System inside our galaxy, and galaxies in the distant universe. In interaction with the Earth’s atmosphere, … Read more
The nature and properties of energy and matter are the focus of the scientific field of physics. Major topics in physics include mechanics, temperature, electricity, light, irradiation, magnetism, sound, and atomic structures. Chemistry is the study of the characteristics, composition, and structure of elements and compounds and their ability to change states and the transfer … Read more
The physics introduction is not defined in the same manner as the online extensive mathematics textbooks. The objective of Physics Primer, which is comprised of tutorials, videos, and answers to particular problems, is to develop a solid foundation of arithmetic ideas for beginning physics. It is the collection of mathematical ideas that pupils find difficult … Read more
In classical physics, the symbol U frequently represents potential energy. It is used as a symbol for gravitational potential energy and elastic potential energy. U is used to denoting electrical potential energy in electrodynamics. U measures energy in joules. V measures the energy per coulomb of charge in volts. They are comparable but suppose you … Read more
Electric charge is the physical property that makes it generate a force near other electrically charged objects. Like any other form of energy, the amount of charge that an object contains will vary. The charge is usually measured in coulombs or electrons and can be negative or positive. An object with a negative electric charge … Read more
The point on the principal axis where incident parallel rays meet after reflection from the mirror is known as the focus. The focus of a mirror is at the center of the optical system. The distance from the focus to the mirror end is called focal length, also known as flange distance. When light enters … Read more
A cell is an electrical energy source that uses chemical reactions to generate a current. An electrical cell is an ‘electrical power supply. It converts stored chemical energy into electrical potential energy, which can be used to provide electricity. A cell acts as a ‘battery.’ The chemical reactions create the electromotive force that drives an … Read more
If the body does not move or change its position with respect to the surroundings or frame of reference, it is said to be at rest. The person is said to be at rest on a bus or in the cinema. The body can also change its position and be said to be moving or … Read more
Newton’s third law quantifies thrust as a reaction force. When a system evacuates or accelerates mass in one direction, the accelerated mass causes an equal magnitude force to be applied in the other direction. If you’ve been swimming, you may feel your weight has decreased. It is because any fluid acts upward on a submerged … Read more
Physics did not necessarily have a father, and no one invented physics either. It was always close by, and as long as humans were curious about the planet, discoveries would be made. That is what scientists do; they find new things. It’s easy to imagine someone thousands of years ago discovering that rapidly rubbing two … Read more