Convection in the room: air conditioners and stoves

Convection in the room: air conditioners and stoves

Convection in the room There are three ways to transfer the heat: conduction, convection, and radiation. Convection is the method by which heat is transferred by the direct movement of particles that make up a liquid … more

Cold and Warm Water

Diffusion of ink in cold and hot water

Particle movement according to temperature The matter around us is made up of tiny particles constantly moving. The particles move more actively as the temperature increases. Water particles move more actively in hot water than cold … more

Boiling point measurement

Boiling Point (Ice or Water, Ethanol)

Boiling point and properties of substances All water boils at 100°C when heated, even if it has a different mass. In this way, the same kind of substance has the same boiling point regardless of quantity. … more

heat conduction simulation

Particle Simulation of Thermal Conduction

About this simulation This simulation shows the particle’s temperature by its color.● Red means high temperature.● Blue means low temperature. We apply Hooke’s law between particles.(\(f=-kx\)) Thermal Conduction Conduction is a method of transfer of heat … more

Conduction

Conduction

Conduction of Heat If a high-temperature object and a low-temperature object are attached to each other, the high-temperature object’s heat moves to the low heat by molecular motion. Examples of Conduction that can be seen around … more

기체 분자의 근 평균 제곱 속력(Vrms)

Root-Mean-Square Velocity of Gas Molecules (Vrms)

* The gas molecules in the above simulation are all of the same type, and the color of the molecules is for identification purposes only. Kinetic Molecular Theory of Gases ‘Kinetic Theory of Gases’ is a … more

Air conditioner

The principle of air conditioner and refrigerator

The air conditioner The air conditioner is based on ‘evaporative heat'(a phenomenon that absorbs the surrounding heat when the liquid evaporates). The indoor unit suddenly expands the compressed refrigerant through a narrow hole. Then, the refrigerant … more

Pressure Volume Diagram

Pressure Volume Diagram

You can drag ‘start’ and ‘endpoint.’ Thermodynamics of Gas The gas changes its temperature while exchanging thermal energy with the outside and sometimes does work outside as it expands or contracts. The process of changing the … more

Temperature and Reaction Rate

Temperature and Reaction Rate

Heat and molecular motion Every object is made up of atoms or molecules that are small particles that the eye can not see. These particles are constantly moved or oscillated themselves. This is called molecular motion. … more

Bimetal

Bimetal

Bimetal Bimetal is a combination of two metals with different degrees of thermal expansion, and when the temperature of the bimetal increases, it bends toward the smaller degree of thermal expansion. Such bimetals keep the temperature … more

Status Change of Water

Status Change of Water

Melting point and heat of fusion When heat is applied to ice (solid), the temperature rises gradually. By the way, while the ice is melting, the temperature does not rise. Temperature is kept constant, and the … more