The different experiments result the temperature increase of an object as we will as it is surroundings because of friction; which is directly related how much amount of mechanical energy lost from that object. The most important experiment related to this investigation is conducted by James Joule in 1840. According to his findings, the mechanical energy isn’t actually lost from the object, however it is converted into the other forms of mechanical energy. The new form he invented is thermal energy. This is mainly because of the temperature increase in this object. This increase in temperature is depends on mass of the object, which material is used for the manufacture etc. More details about the thermal energy as we will as the equation, facts are mentioned in the following sections.