Pegas puntir
Neraca puntir adalah sebuah pegas yang bekerja dengan memuntir ujung di sepanjang porongnya. Sehingga, obyek elastis fleksibel menyetor energi mekanikal saat alat tersebut terpuntir.
Daftar pustaka
- Gray, Andrew (1888), The Theory and Practice of Absolute Measurements in Electricity and Magnetism, Vol.1, Macmillan, hlm. 254–260. Detailed account of Coulomb's experiment.
- Charles Augustin de Coulomb biography, Chemistry Dept., Hebrew Univ. of Jerusalem, diarsipkan dari versi asli tanggal 2009-08-06, diakses tanggal August 2, 2007. Shows pictures of the Coulomb torsion balance, and describes Coulomb's contributions to torsion technology.
- Nichols, E.F.; Hull, G.F (June 1903), "The Pressure due to Radiation", The Astrophysical Journal, 17 (5): 315–351, Bibcode:1903ApJ....17..315N, doi:10.1086/141035. Describes the Nichols radiometer.
- Torsion balance, Virtual Geoscience Center, Society of Exploration Geophysicists, diarsipkan dari versi asli tanggal 2007-08-18, diakses tanggal 2007-08-04 . Description of how torsion balances were used in petroleum prospecting, with pictures of a 1902 instrument.
- "Charles Augustin de Coulomb", Encyclopædia Britannica, 9th Ed., 6, Werner Co., 1907, hlm. 452
Pranala luar
Wikimedia Commons memiliki media mengenai Torsion springs.
- Torsion balance interactive java tutorial
- Torsion spring calculator
- Big G measurement, description of 1999 Cavendish experiment at Univ. of Washington, showing torsion balance[link broken]
- How torsion balances were used in petroleum prospecting (web archive link)
- Mechanics of torsion springs. Web archive link, accessed December 8, 2016.
- Solved mechanics problems involving springs (springs in series and in parallel)