What is the purpose of literature review?.Explain

The purpose of this literature review is to discuss the evolution of temperature sensor technology with the passage of in the industry. With the passage of time temperature sensors have been becoming very important in the industry. Temperature is the most calculated value in the industry because it is used to control many process such as boiling, melting and heating. Each industry has different kinds of temperature sensors in it. In the past there were very simple temperature sensors which only inform about a certain limit of temperature. The latest temperature sensor can sense up to hundreds of centigrade of temperature. These days most commonly used temperature sensor in the industry are thermistor, RTD sensor, thermocouple and integrated silicon linear sensors. All these sensors have different functionalities
Temperature is the most important environmental factor which is most calculated and measured parameter. It impacts biological, chemical and physical world in numerous ways. History tells us that temperature is the characteristics of environment which people even know in the ages of iron. From cooking the food to making their arms, ancient people use heat. Those people also knew about the nature of heat. For example people knew that fire is hot and ice is cold. Man got the greater knowledge of temperature when he started working with the metals such as iron and bronze. People used to make their arms by melting different metals over fire. Even at that time people knew that a certain amount of heat is required in the process of melting. This certain amount of heat is achieved by calculating the amount of heat which is known as temperature. People in the ancient ages used different techniques to control the amount of heat. For example colour of glowing metal was the indicator for heat control. This glow of metal was used to measure the impact of heat on different bodies. Galileo Galilee was the first scientist who made a temperature sensor which measure the temperature to a certain limit known as thermo scope. He also performed many experiment in order to prove that volume of different bodies got change upon heating and it is very important factor in every experiment.