How could we clearly define Thermodynamics for our Babies?
It’s not always easy to teach our baby about Thermodynamics by equations. Obviously we would choose the simplest strategy to teach them. We could do so with the help of some books and toys which I will be sharing with you in this article. This will facilitate and enhance your baby’s learning in the simplest and easiest way possible, about Thermodynamics.
Below I have chosen to share with you a video to show you how to teach the basic concepts of Thermodynamics to your baby.
==>Here I have selected some top 20 toys<== to best teach your baby about Thermodynamics while they are playing.
During my studies and research about Thermodynamics, I came up with below to share. Doing so now I know how to explain the basic concepts of Thermodynamics to my own children. I would strongly suggest that you should go through it to find out more.
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Basic Concepts of Thermodynamics:
According to scientists thermodynamics and its laws are the tools which literally governed the fate of the universe.
Thermodynamics is a combination of two Greek words Therm means heat and dynamic means motion so thermodynamics means motion of heat.
Thermodynamics is a branch of science which deals with relations among heat energy and work done by heat energy.
Let us list some applications of thermodynamics. Thermodynamic principle is followed in an internal combustion engine which is used in all kinds of:
Now let us take the power plant as an example to explain various thermodynamic approaches to generate power.
A boiler converts water into steam which then turns, rotates the turbine blade connected to a shaft. The shaft is coupled with a generator shaft to produce electricity. In the boiler when water is heated the temperature and pressure will increase.
This can be measured by two approaches:
1. Microscopic approach
2. Macroscopic approach
Similar to matter, water also has numerous molecules. While heating, each molecule will have a certain position. Velocity and energy for a given instant of time and as a result of collision there will be frequent changes in the values of the above variables.
Taking the values of each and every single molecule and summing up these values will give us the exact value of its variables. Like temperature and pressure, this is called microscopic approach or statistical thermodynamics.
It is to be noted that one mole will have 6.022 into 10 power 23 molecules. So it is impossible to measure the behavior of every single molecule and it will be convenient to study the behavior of many molecules in the matter.
For example pressure and temperature are measured easily with the help of measuring instruments. This is called a macroscopic approach or classical thermodynamics.
Concepts of Continuum:
From the atomic nature of substances we know that atoms in a matter are widely spaced. In macroscopic approach while considering a volume of molecules at any instant. It will have a specific number of molecules in it, due to random movement of molecules it will not be the same in another instance so the concept of continuum is used in macroscopic approach of thermodynamics in which the atoms in the matter are treated as continuous and homogeneous, that is a continuum.
Before heading into the next topic let us ignite a candle to know about all these terminologies a thermodynamic system is a defined space or area in which the transfer of mass or energy or both takes place. Water in the heat ex changer, lubricating oil in an engine are some examples of thermodynamics systems.
Anything outside the system which affects the behavior of a system is called as surroundings or environment.
If an air-conditioner is a system then the air in the house and the lawn are the surroundings. System and surroundings are separated by a boundary. It may be fixed or movable and real or imaginary.
It will not occupy any volume or mass in space and has zero thickness.
System, boundary and surrounding together comprise a universe.
Thus, below 4 listed are the basic concepts of thermodynamics.
Let us analyze the working of a car engine to discuss different thermodynamic systems. Imagine you are watching the working of an IC engine. The inlet valve opens and air is drawn during the suction stroke. We can see that both the valves are closed during the compression stroke.
The piston moves upward and compresses the air at high pressure and temperature, no mass transfer takes place since all the valves are closed until the piston reaches the top dead center.
This is an example of a closed system thus in a closed system there is no mass transfer but only energy transfer across the system boundaries. Only heat and work interactions are observed within the system. It is also called a control mass system.
After compression and expansion processes the exhaust valve opens and both mass and energy transfer take place. In an open system as both mass and energy transfer take place, it is also called control volume process. Thus, the exhaust stroke of an IC engine can be called an open system.
A system which is not affected by the surroundings it’s called an isolated system. Here no heat work and mass transfer takes place. For example when hot milk is pulled in a thermo flask the outer surface is insulated and no heat and mass transfer takes place from the flask to the surroundings. We can call this system an isolated system.
Thus, the types of thermodynamic systems are:
Now let us discuss Thermal Equilibrium. Consider a thermal flat with hot water inside. When its lid is opened heat transfers from the flask to the surroundings and after some time the temperature of this system and the surrounding become uniform. We can say that the system is in thermal equilibrium.
When we place two identical objects in a system and after some time they will be in a balanced position here. There is no unbalanced force in the seesaw hence the seesaw is in Mechanical Equilibrium.
When a liquid is poured on a ferrous material, due to the electronegativity of the liquid corrosion occurs and after NF electrons are drawn. It will reach a state where it will lose the tendency to draw electrons from the liquid thus there will not be any chemical reaction within the system. This state is called chemical equilibrium.
If a system is in thermal mechanical and chemical equilibrium, we can say that the system is in thermodynamic equilibrium.
Before we summarize, below are some video walk through I would like to share with you about the first and second law of Thermodynamics by professor Dave.
First Law of Thermodynamics
Second Law of Thermodynamics
In this lesson you have learned about thermodynamics. It is a branch of science which deals with relations among heat energy and work done by heat energy.
Microscopic approach: If the study of behavior of matter is described by summing up various values of each molecule. It is called microscopic approach or statistical thermodynamics.
Macroscopic approach: If the study of behavior of matter is described by the effect of many molecules it is called macroscopic approach or classical thermodynamics.
Concept of Continuum: The atoms in a matter are treated as continuous and homogeneous, that is a continuum.
System: the Space or area in which the energy transfer and conservation takes place.
Surrounding: Anything outside a system that affects the behavior of the system.
Boundary: System and surroundings are separated by a boundary; it may be fixed or movable and real or imaginary.
Universe: System boundary and surroundings together comprise a universe.
Closed System: In this system only energy transfer with its surroundings takes place.
Open System: In this system energy and matter transfer takes place with its surroundings.
Isolated System: In this system there is no energy or matter transfer with its surroundings.
Thermodynamic Equilibrium: It satisfies the following equilibriums.
Thermal Equilibrium: Temperatures of a system and its surroundings become uniform.
Mechanical Equilibrium: There is no unbalanced force within a system and between the system and its surroundings.
Chemical Equilibrium: There is no chemical reaction within the system.
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