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Introduction All matter around us is made up of molecules. Because these molecules are in motion, each molecule has kinetic energy and static energy due to the gravitational force of other molecules around it. The amount of kinetic energy and static energy is the internal energy of the molecules. When this internal energy flows out of an object, it is called thermal energy. The matter is a term we use to refer to all things in the universe. Everything around us is matter. The air we breathe, the food we eat, the pen we write with, a cloud, stones, plants, ... Read More
Introduction We know that the gas’s large number of molecules are known as particles. The particles move randomly here and there without any alignment and due to this random motion, they strike each other and change their path. When it is not easy to understand the actual paths of moving particles, then we use the concept of mean free path. In the mean free path, the moving particle refers to an atom, a photon, or a molecule. What is a collision? In any instance, when two or more bodies hit each other by exerting force in a short period ... Read More
Introduction We know that everything is made up of matter and the different states of matter are solid, liquid, and gas. The mass and weight of each state of matter are not the same. That is why a precise explanation of mass and weight is necessary. It is important to understand the scientific use and difference between these concepts. What is Mass? The amount of matter contained in a body is known as mass. It is a constant fundamental quantity of the body that remains the same in every place. Ordinary weighing balances are used to measure the mass. ... Read More
Introduction Measurement is the comparison of an unknown quantity with a known value. Measurement is a system of measuring. Measurement is always a numerical value. Measurements include length, mass, volume, temperature, etc. It is associated with geometry, trigonometry, algebra, etc. Units were given to the measured values. Fundamental units for length, mass, and time are m, kg, and sec. There are many methods for measuring length. But the distance between the stars and the distance between the objects in space are done by using triangulation and parallax methods. What do you mean by the length triangulation method? The distance between ... Read More
Introduction In general, we deal with three dimensions of space that are very common and related to our daily macroscopic life. However, according to Einstein’s theory of relativity, the time coordinate is also effective in our daily life. This fact was coined and proved by scientist Hermann Minkowski. However, the birth of this concept was from the experiment of Poincare that was introduced in 1905 but then it was in a brief or we can say in raw form. Later, in 1908, the concept was explained by Hermann Minkowski. He described that Minkowski’s space as an imaginary space that has ... Read More
Introduction In the field of engineering, measurement is very important. Mostly, we use meter scales for measuring the objects in our daily life. Some objects are very small in size so these cannot be measured by the normal scale. Thus, we need a device that can measure the size, diameter, etc of a very small range. The micrometer is a device that can help us to measure the size or diameter of a ball, wire, or pipe with high accuracy. However, the use of such devices is somewhat confusing because it needs some basic knowledge of small units of lengths ... Read More
Introduction A wave is a pattern formed in a medium when a disturbance travels from one point to another while particle transport occurs. We are surrounded by waves. Waves can be found in everything, from the light we see to the sounds we hear to the earthquakes that shake the earth. The characteristic of a wave is that it transports energy through something without actually transferring that thing. Waves A wave is a pattern formed in a medium when a disturbance travels from one point to another, accompanied by particle transport. There are waves all around us. Waves are everywhere, ... Read More
Introduction Minerals or rocks are something that the earth is blessed with. There were many types of rocks present in our nature like sedimentary rocks, igneous rocks, and metamorphic rocks. We discussed metamorphic rocks. Metamorphic rocks are created when extreme heat and pressure change and change the original rock into a new type of rock, sedimentary or igneous rocks are transformed into new metamorphic rocks under extreme heat and pressure like magma inside the earth. The changes that occurred during this process of metamorphism. This is because of the change in the pressure and temperature that changes the configuration ... Read More
Introduction Clouds reflect much of the solar radiation in the atmosphere. It prevents the heat from falling on the earth. Therefore, cloudless desert areas have higher temperatures and cloudier areas have lower temperatures. Rain falls when the temperature is above freezing. Rainfall is found in most places on earth. Precipitation occurs only when there is too much moisture in the air. The diameter of a raindrop is more than 5 mm. Humidity is an important factor affecting weather and climate in the atmosphere. As the amount of water vapour in the atmosphere increases, so does the amount of ... Read More
Introduction The movement of the charged particles is responsible for electric energy. Energy obtained from the kinetic energy or potential energy of the charged particles is the electric energy. Charged particles are atoms, molecules, or ions that have a charge on them. There is a force of attraction or repulsion between the charged particles which depends on the coulomb’s law. Electricity is an important form of energy. Every matter in the universe attracts other matter with some attractive force. Light is electromagnetic radiation and is the only part of the electromagnetic spectrum that can be visible to the human ... Read More