Coba jelasin Daftar pustaka dari Pegas puntir dong

.  Detailed account of Coulomb's experiment.

.  Shows pictures of the Coulomb torsion balance, and describes Coulomb's contributions to torsion technology.

.  Describes the Nichols radiometer.

.  Description of how torsion balances were used in petroleum prospecting, with pictures of a 1902 instrument.