1 of 5000

|

wood prints portrait wood prints science wood prints physics wood prints electric wood prints electrical wood prints electricity wood prints history wood prints historic wood prints historical wood prints famous wood prints important wood prints notable wood prints well-known wood prints figure wood prints person wood prints

paintings portrait paintings science paintings physics paintings electric paintings electrical paintings electricity paintings history paintings historic paintings historical paintings famous paintings important paintings notable paintings well-known paintings figure paintings person paintings

Add This Artwork to Your Favorites Collection

Comment

Add This Artwork to Your Favorites Collection

Comment

James Prescott Joule (December 24, 1818 - October 11, 1889) was an English physicist and brewer. He studied the nature of heat, and discovered its relationship to mechanical work. This led to the theory of conservation of energy, which led to the development of the first law of thermodynamics. He worked with Lord Kelvin to develop the absolute scale of temperature, made observations on magnetostriction, and found the relationship between the current through resistance and the heat dissipated, now called Joule's law. He showed that energy is conserved in electrical circuits involving current flow, thermal heating, and chemical transformations. The SI (thermal energy) derived unit of energy, the joule, is named after him. He died in 1889 at the age of 70. His gravestone is inscribed with the number "772.55", his climacteric 1878 measurement of the mechanical equivalent of heat, in which he found that this amount of foot-pounds of work must be expended at sea level to raise the temperatur...