This person developed a device more complicated than a Wheatstone bridge that is used for measuring small resistances. The effect named for this person and James Joule [jool] explains the temperature 
This person developed a device more complicated than a Wheatstone bridge that is used for measuring small resistances. The effect named for this person and James Joule [jool] explains the temperature change of a gas that expands without any heat transfer. He made improvements to the mirror galvanometer [gal-vah-NOM-ih-ter], which he used on his trans-Atlantic cable. Name this scientist whose work in thermodynamics led him to create an absolute temperature scale with its zero corresponding to absolute zero temperature.
This person developed a device more complicated than a Wheatstone bridge that is used for measuring small resistances.