What is radiation? Radiation is various types of energy in the form of particles or electromagnetic waves that travel through space. The radiation has different compositions and origins. Radiation is a physical process of emission (output) and propagation (displacement) of energy by moving particles or electromagnetic waves. This process can occur in a material medium… Continue reading What is Radiation
Category: Physics
Concept of Time | Physical Quantity | THEORETICAL PHYSICS
In physical terms, time is what clocks measure. This may sound unsatisfactory, but this definition corresponds not only to our everyday understanding, but also to Einstein’s theory of relativity. Einstein, after all, said that time is relative, and by that he meant that clocks moving through space at different speeds tick at different speeds. This… Continue reading Concept of Time | Physical Quantity | THEORETICAL PHYSICS
Albert Einstein and His Top Five Discoveries
Einstein is considered the greatest of theorists, alongside Isaac Newton, the father of classical mechanics. His name has become synonymous with genius. To commemorate him, we have compiled this list of his main contributions to physics: 1. Brownian motion:This discovery, made in 1905, explains how the thermal motion of individual atoms can form a fluid.… Continue reading Albert Einstein and His Top Five Discoveries
Highest and Lowest Temperature in the Universe?
We will start by explaining the physical phenomenon on which the temperature that something can have depends. When the particles of an object move a lot, they generate heat, and the entity has a higher temperature. When particles move less, there is less heat, and the thing is colder. We can imagine a point where… Continue reading Highest and Lowest Temperature in the Universe?
Why Are Some Metals Attracted to Magnets and Others Are Not?
To keep it simple, when it comes to magnetism there are three main types of materials: Ferromagnetic: Which are strongly attracted by magnetic fields, and are mainly alloys of iron, nickel and cobalt; note that these three metals are adjacent in the periodic table. Paramagnetic: Which are weakly attracted by magnetic fields, such as oxygen.… Continue reading Why Are Some Metals Attracted to Magnets and Others Are Not?
Who Discovered Electricity
Electricity is a set of physical phenomena occurring in just about everything around us. It can be found in the light bulb on the ceiling, it generates energy for our PC, TV and smartphone. Even brain cells use electricity and chemicals to communicate. However, despite the fact electricity is ubiquitous, it was not used until… Continue reading Who Discovered Electricity
Types of Energy
We use several types of energy on a daily basis. The most important are: mechanical energy, electrical energy, thermal energy, chemical energy, nuclear energy, light energy and sound energy. Remember that energy is a concept used in several scientific areas, such as chemistry, physics and biology. It basically means the ability to produce heat or… Continue reading Types of Energy
Gravitational Force Equation and Definition
Gravitation is one of the four fundamental forces of nature. Of all four basic forces, gravitational force is the one that we are particularly familiar with. The other forces are the weak nuclear force, electromagnetic force and strong nuclear force. The weak and strong forces play a special role at the level of subatomic particles.… Continue reading Gravitational Force Equation and Definition
What is The Theory of Relativity?
You have of course already heard of the theory of relativity, but did you understand it? We explain briefly and simply what Einstein’s theory is. Basically, it is about the structure of space, time and the nature of gravity. Whoever reads this is (almost) as smart as Einstein Albert Einstein. He still sticks his tongue… Continue reading What is The Theory of Relativity?