Introduction Tea is one of the most famous beverages in India and almost in the world. But have you ever made a cup of tea for yourself or any other? If not, then definitely you have seen at least. When the tea starts boiling then you must observe the tea leaves which were at the bottom start coming at the top of the pot. Science is all about questioning, then start questioning how it is happening? It is happening due to Convection current. But what is convection? Convection Currents Convection is the mode of heat and mass transfer in ... Read More

Introduction Thermal energy is a form of energy which generates due to heat and flows from the higher amount of temperature to the lower amount of temperature in the body on contact. It is possible to measure the thermal energy in the body with the utilisation of the "sum of kinetic energies". "Joule" (J) is the SI unit of the heat energy and Calorie is the practical unit of the "heat energy" (Aw, 2020). Hence, the hotness and coldness of the body are the temperatures, where a thermometer can measure the temperature of the body. About Thermometer A reliable medical ... Read More

Introduction Each Fahrenheit and Celsius scale possesses significant and different temperatures in which the water freezes and boils as well. On a centigrade scale, the temperature is expressed by pointing to degrees Celsius. On another scale, the Fahrenheit scale, the temperature is mainly expressed by pointing to degrees Fahrenheit. History and importance of both scales Between Fahrenheit and Celsius scales, Daniel Gabriel Fahrenheit, a physicist, firstly invented Fahrenheit scale in 1724. This physicist's main concentration was to measure the average inner temperature of a human's body and also to measure the temperature of Brine in which it freezes (Paoletti, 2020). ... Read More

Introduction The refrigerant is usually put through a compressor that gradually raises the gas pressure and enhances the temperature. Then through the ''condense coils'' the hot gas flows to heat up the inside area which is of higher temperature. If the freezer or refrigerator's temperature is kept at zero degrees Fahrenheit then the food will remain at a safe temperature so that it can be stored and consumed later after 3 or more days. Figure 1: Refrigerators and Heat Pumps The heat is then transferred to the room and then again condenses back into ''liquified'' form. Heat pump is ... Read More