Tuesday, August 14, 2007

James Prescott Joule

James Joule - English physicist James Prescott Joule, FRS (December 24, 1818 – October 11, 1889) was an English physicist, born in Sale, near Manchester. Joule studied the nature of heat, and discovered its relationship to mechanical work (see energy). This led to the theory of conservation of energy, which led to the development of the first law of thermodynamics. The SI unit of work, the joule, is named after him. He worked with Lord Kelvin to develop the absolute scale of temperature, made observations on magnetostriction, and found the relationship between the flow of current through a resistance and the heat dissipated, now called Joule's law.

"I shall lose no time in repeating and extending these experiments, being satisfied that the grand agents of nature are by the Creator's fiat, indestructible; and that wherever mechanical force is expended, and exact equivalent of heat is always obtained."

"After knowledge of, and obedience to, the will of God, the next aim must be
to know something of His attributes of wisdom power and goodness as evidenced by His handiwork. It is evident that an acquaintance with natural laws means no
less than an acquaintance with the mind of God therein expressed."
-James Prescott Joule


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