One calorie equals 4.184 of this man's namesake SI unit, which is often converted into kilowatt-hours.
John Benjamin Dancer designed several of the instruments used in this scientist's experiments. This man's namesake law states that the heat generated by a current through a conductor is proportional to the resistance and the square of the current. During the 1840s, this man used a water friction apparatus to prove the conservation of energy. This man is first alphabetically in the name of an effect that states when a gas expands without performing external work, the gas decreases in temperature. One calorie equals 4.184 of this man's namesake SI unit, which is often converted into kilowatt-hours. For 10 points, name this physicist who names the SI unit of energy.
John Benjamin Dancer designed several of the instruments used in this scientist's experiments.
James Prescott Joule 