Blog – 3 laws of thermodynamics

Thermodynamics is the study of energy, ability of energy to do work and how it can change into different forms. There are three accepted and established laws of thermodynamics, the first law, also called conservation of energy, states that energy cannot be created nor destroyed. The first law is just saying that the total amount of energy in the universe is constant, whether the energy is in its original form or a different form. The second law, commonly known as the law of increased entropy, says that the entropy of an isolated system not in equilibrium will increase slowly, approaching the maximum value of equilibrium. This law basically means that the universe is constantly losing usable and useful energy and never gaining any. Furthermore,entropy is a measurement of the randomness or disorder, thus an increase in entropy equals an increase of randomness and disorder in the system. The third states that  as temperature approaches absolute zero, the entropy of a system approaches a constant minimum. At absolute zero ( 0 Kelvin), all molecular movement stops, since temperature is a measure of molecular movement and no temperature can be lower than absolute zero, energy will be very limited and at its minimum when approaching absolute zero. Thus these are the three laws of thermodynamics which together states that concentrated or useful energy must be used to accomplish useful work and useful energy is constantly being lost into another form of energy.