“Those who are unacquainted with the details of scientific investigation have no idea of the amount of labour expended in the determination of those numbers on which important calculations or inferences depend. They have no idea of the patience shown by a Berzelius in determining atomic weights; by a Regnault in determining coefficients of expansion; or by a Joule in determining the mechanical equivalent of heat.” ScienceLabourCalculationsJames JouleJames Prescott JouleJouleAtomic WeightBerzeliusHenri Victor RegnaultJöns Jacob BerzeliusRegnaultScientific Investigation Author:John Tyndall